{"id":56704,"date":"2026-01-20T06:12:23","date_gmt":"2026-01-20T06:12:23","guid":{"rendered":"https:\/\/www.kaysuns.com\/?post_type=blog&#038;p=56704"},"modified":"2026-01-20T06:16:19","modified_gmt":"2026-01-20T06:16:19","slug":"liga-20-vs-28","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/alloy-20-vs-28\/","title":{"rendered":"Liga 20 vs. 28, qual \u00e9 a diferen\u00e7a?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"56704\" class=\"elementor elementor-56704\" data-elementor-post-type=\"blog\">\n\t\t\t\t<div class=\"elementor-element elementor-element-75804a9 e-flex e-con-boxed e-con e-parent\" data-id=\"75804a9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ce26fba elementor-widget elementor-widget-text-editor\" data-id=\"ce26fba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<strong>Alloy 20 vs 28<\/strong>,what&#8217;s the difference?While both materials belong to the high-performance stainless steel family,they serve different chemical &#8220;battles.&#8221;<br \/>\nIf you choose incorrectly,you risk premature stress corrosion cracking or localized pitting.This guide breaks down the chemical,mechanical,and practical differences between these two powerhouses.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6e238e6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6e238e6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-dd00842\" data-id=\"dd00842\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d6591ec elementor-widget elementor-widget-heading\" data-id=\"d6591ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Understanding Alloy 20<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9925312 elementor-widget elementor-widget-text-editor\" data-id=\"9925312\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAlloy 20 (UNS N08020) earned the nickname &#8220;The Sulfuric Acid Alloy&#8221; for a good reason.Scientists specifically developed this niobium-stabilized material to resist boiling sulfuric acid.It sits on the border between stainless steel and nickel alloys.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-170890b elementor-widget elementor-widget-text-editor\" data-id=\"170890b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tIn a typical piping network,Alloy 20 is the go-to choice for chemical processing and food production.Its high nickel content prevents chloride-induced stress corrosion cracking.Furthermore,the addition of copper provides a unique defense against aggressive acids.For designers of stainless steel pipe fittings,Alloy 20 offers a reliable solution for mid-to-high concentration acid transport.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ffc4495 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ffc4495\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3eee571\" data-id=\"3eee571\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-df38943 elementor-widget elementor-widget-heading\" data-id=\"df38943\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Understanding Alloy 28<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8bdbb4d elementor-widget elementor-widget-text-editor\" data-id=\"8bdbb4d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAlloy 28 (UNS N08028) is a cold-worked,high-alloy austenitic stainless steel.While Alloy 20 focuses on acids,Alloy 28 thrives in deep,&#8221;sour&#8221; oil and gas wells.It contains higher levels of chromium and molybdenum compared to many standard grades.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ccc9bf3 elementor-widget elementor-widget-text-editor\" data-id=\"ccc9bf3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThis chemistry makes it exceptionally resistant to pitting and crevice corrosion.In the world of stainless steel pipe,Alloy 28 often appears in downhole tubing and heat exchangers.It handles high-pressure environments where hydrogen sulfide (H<sub>2<\/sub>S) and chlorides are present simultaneously.If your system faces deep-sea conditions or complex phosphoric acid production,Alloy 28 is the stronger candidate.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d2c5c7d elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d2c5c7d\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-dcc4acc\" data-id=\"dcc4acc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5228c4b elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"5228c4b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What We Do<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4c756d elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"e4c756d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Plate<\/li><li>Sheet<\/li><li>Forgings<\/li><li>Round Bar<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba82fa1 elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"ba82fa1\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Flange<\/li><li>Pipes<\/li><li>Fittings<\/li><li>Customized<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-798de64\" data-id=\"798de64\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c8e0641 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"c8e0641\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Contact Us For More Information\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26361d2 elementor-align-center elementor-mobile-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"26361d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\" id=\"#241018\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact Us<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-78078dc e-flex e-con-boxed e-con e-parent\" data-id=\"78078dc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-fa45f3a e-con-full e-flex e-con e-child\" data-id=\"fa45f3a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-31950b3 elementor-widget elementor-widget-heading\" data-id=\"31950b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">When to Choose Alloy 20<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-707d56f elementor-widget elementor-widget-text-editor\" data-id=\"707d56f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Sulfuric Acid Processing<\/li><li>Food and Pharmaceutical Lines<\/li><li>Complex Fabrication<\/li><li>Niobium Stabilization Requirement<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-15d4512 e-con-full e-flex e-con e-child\" data-id=\"15d4512\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0f75f74 elementor-widget elementor-widget-heading\" data-id=\"0f75f74\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">When to Choose Alloy 28<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-445ad62 elementor-widget elementor-widget-text-editor\" data-id=\"445ad62\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Sour Gas Environments<\/li><li>Phosphoric Acid Production<\/li><li>Seawater Heat Exchangers<\/li><li>High-Pressure Tubing<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-525335b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"525335b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-658b0ec\" data-id=\"658b0ec\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-201b5e2 elementor-widget elementor-widget-heading\" data-id=\"201b5e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Alloy 20 VS 28:Chemical Composition Comparison<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78d4647 elementor-widget elementor-widget-text-editor\" data-id=\"78d4647\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Element (%)<\/th>\n<th>Alloy 20 (UNS N08020)<\/th>\n<th>Alloy 28 (UNS N08028)<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Ni<\/td>\n<td>32.5 &#8211; 35<\/td>\n<td>30 &#8211; 32<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Cr<\/td>\n<td>19 &#8211; 21<\/td>\n<td>26 &#8211; 28<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Fe<\/td>\n<td>Balance (~ 33)<\/td>\n<td>Balance (~ 35)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Mo<\/td>\n<td>2 &#8211; 3<\/td>\n<td>3 &#8211; 4<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Cu<\/td>\n<td>3 &#8211; 4<\/td>\n<td>0.6 &#8211; 1.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e37c259 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e37c259\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8cdf026\" data-id=\"8cdf026\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-252d2c9 elementor-widget elementor-widget-heading\" data-id=\"252d2c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Alloy 20 VS 28:Pressure and Mechanical<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a10104 elementor-widget elementor-widget-text-editor\" data-id=\"8a10104\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAlloy 28 often undergoes cold-working to increase its mechanical properties.This makes it ideal for high-pressure tubing where wall thickness must be minimized.On the other hand,Alloy 20 maintains a more standard austenitic strength profile.It is easier to form into complex stainless steel pipe fittings like tees and reducers.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae95e40 elementor-widget elementor-widget-text-editor\" data-id=\"ae95e40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAdditionally,the thermal expansion rates differ slightly.When you design a flange joint,you must ensure your gaskets and bolts can handle the thermal cycling of these alloys.Because both have high nickel content,they expand more than carbon steel.Therefore,using the correct assembly standards, such as ASME PCC-1,is vital for a leak-free connection.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cf8daa0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cf8daa0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-97f7011\" data-id=\"97f7011\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-165c1a9 elementor-widget elementor-widget-heading\" data-id=\"165c1a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Alloy 20 VS 28:Corrosion Resistance Comparison<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b5b61f elementor-widget elementor-widget-text-editor\" data-id=\"7b5b61f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Corrosive Media<\/th>\n<th>Preferred Alloy<\/th>\n<th>Reason for Selection<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Sulfuric Acid (H<sub>2<\/sub>SO<sub>4<\/sub>)<\/td>\n<td rowspan=\"3\">Alloy 20<\/td>\n<td>Higher Copper and Nickel content<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Nitric Acid (HNO<sub>3<\/sub>)<\/td>\n<td>Stable performance in oxidizing acids<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Pharmaceutical Fluids<\/td>\n<td>Excellent purity and ease of cleaning<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Phosphoric Acid (H<sub>3<\/sub>PO<sub>4<\/sub>)<\/td>\n<td rowspan=\"2\">Alloy 28<\/td>\n<td>Superior Chromium content (27%)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Sour Gas (H<sub>2<\/sub>S + Cl<sup>&#8211;<\/sup>)<\/td>\n<td>Better resistance to Pitting\/SSC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a7bd5c0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a7bd5c0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e54527a\" data-id=\"e54527a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-08f1aa9 elementor-widget elementor-widget-heading\" data-id=\"08f1aa9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Alloy 20 VS 28:Fabrication and Welding Challenges<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-716d333 elementor-widget elementor-widget-text-editor\" data-id=\"716d333\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tWelding stainless steel of these grades requires professional expertise.<a href=\"https:\/\/www.kaysuns.com\/alloy-20-pipe-supplier\/\" target=\"_blank\" rel=\"noopener\">Alloy 20 pipe<\/a> is niobium-stabilized to prevent &#8220;Sensitization&#8221; during welding.This means you can weld it without losing corrosion resistance in the heat-affected zone.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5257e45 elementor-widget elementor-widget-text-editor\" data-id=\"5257e45\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAlloy 28 requires careful heat control to avoid the formation of intermetallic phases.If the weld pool stays too hot for too long,the material can become brittle.<br \/>Kaysuns professionals often use TIG welding with high-purity Argon gas for the root pass of an Alloy 28 pipe.This ensures the internal passive layer remains intact,preventing future localized corrosion at the joint.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-25c10c3 e-flex e-con-boxed e-con e-parent\" data-id=\"25c10c3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-017f4e2 elementor-cta--layout-image-left elementor-cta--mobile-layout-image-above elementor-cta--skin-classic elementor-animated-content elementor-widget elementor-widget-call-to-action\" data-id=\"017f4e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<a class=\"elementor-cta\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\">\n\t\t\t\t\t<div class=\"elementor-cta__bg-wrapper\">\n\t\t\t\t<div class=\"elementor-cta__bg elementor-bg\" style=\"background-image: url(https:\/\/www.kaysuns.com\/wp-content\/uploads\/2025\/12\/alloy-20-pipe.webp);\" role=\"img\" aria-label=\"alloy-20-pipe\"><\/div>\n\t\t\t\t<div class=\"elementor-cta__bg-overlay\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tFeel Free To Contact Us\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tKAYSUNS offers package solutions for piping materials such as Pipes, Fittings, Flanges, Valves, Plates, Forgings, Ingots of Stainless Steel, Duplex and Alloy Steels, all kinds of Fasteners (Bolts, Nuts, Flat Washers, Bullet Washers) and other products. We accept customized service for our products and some of them can be supplied in small quantities. If you have any questions about our company and products, please feel free to contact us.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__button-wrapper elementor-cta__content-item elementor-content-item \">\n\t\t\t\t\t<span class=\"elementor-cta__button elementor-button elementor-size-\">\n\t\t\t\t\t\tGet QUOTE\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b1d9f71 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b1d9f71\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-625d3ff\" data-id=\"625d3ff\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-52f1b50 elementor-widget elementor-widget-heading\" data-id=\"52f1b50\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Alloy 20 vs 28: Comparing PREN<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7811b69 elementor-widget elementor-widget-text-editor\" data-id=\"7811b69\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tWhen engineers evaluate Alloy 20 vs 28 for sea-water or chloride-rich environments,they look at the Pitting Resistance Equivalent Number (PREN).This formula gauges how well an alloy resists localized &#8220;pitting&#8221; holes.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81f14c8 elementor-widget elementor-widget-text-editor\" data-id=\"81f14c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"math-block\" data-math=\"PREN = Cr + 3.3 \\cdot Mo + 16 \\cdot N\"><strong>PREN = Cr + 3.3 \u00b7 Mo + 16 \u00b7 N<\/strong><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81e76f5 elementor-widget elementor-widget-text-editor\" data-id=\"81e76f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAlloy 28 typically boasts a PREN of approximately <b data-path-to-node=\"17\" data-index-in-node=\"50\">38 to 40<\/b>,while Alloy 20 sits around <b data-path-to-node=\"17\" data-index-in-node=\"87\">24 to 26<\/b>.<br \/>Consequently,Alloy 28 is significantly better equipped for environments where salt deposits or stagnant fluids might cause localized breaches in the passive layer.If your piping system handles seawater cooled heat exchangers,the higher PREN of Alloy 28 is essential for long-term safety.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fc1e1a1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fc1e1a1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-0173d9e\" data-id=\"0173d9e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c93f506 elementor-widget elementor-widget-heading\" data-id=\"c93f506\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contact Us<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e8d23c4 elementor-widget-divider--view-line_text elementor-widget-divider--element-align-left elementor-widget elementor-widget-divider\" data-id=\"e8d23c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tGet In Touch\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48ba3ed elementor-align-start elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"48ba3ed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-map-marker-alt\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">RM901 No.22 Tangjiaqiao Road Wenzhou  China<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-phone-square-alt\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">+86 577 8551 1171<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:sales@kaysuns.com\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-envelope-square\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">sales@kaysuns.com<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.kaysuns.com\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-book-reader\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">https:\/\/www.kaysuns.com\/<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5083ebe elementor-widget-divider--view-line_text elementor-widget-divider--element-align-left elementor-widget elementor-widget-divider\" data-id=\"5083ebe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tFind Us\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fcb391c e-grid-align-left elementor-shape-square elementor-grid-0 elementor-widget elementor-widget-social-icons\" data-id=\"fcb391c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"social-icons.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-social-icons-wrapper elementor-grid\" role=\"list\">\n\t\t\t\t\t\t\t<span class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t<a class=\"elementor-icon elementor-social-icon elementor-social-icon-facebook elementor-repeater-item-2f55736\" href=\"https:\/\/www.facebook.com\/kaysuns?mibextid=LQQJ4d\" target=\"_blank\" rel=\"nofollow\" >\n\t\t\t\t\t\t<span class=\"elementor-screen-only\">Facebook<\/span>\n\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fab fa-facebook\"><\/i>\t\t\t\t\t<\/a>\n\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<span class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t<a class=\"elementor-icon elementor-social-icon elementor-social-icon-linkedin elementor-repeater-item-25db865\" href=\"https:\/\/www.linkedin.com\/company\/kaysuns\/\" target=\"_blank\" rel=\"nofollow\" >\n\t\t\t\t\t\t<span class=\"elementor-screen-only\">Linkedin<\/span>\n\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fab fa-linkedin\"><\/i>\t\t\t\t\t<\/a>\n\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<span class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t<a class=\"elementor-icon elementor-social-icon elementor-social-icon-envelope elementor-repeater-item-bb1358c\" href=\"mailto:sales@kaysuns.com\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-screen-only\">Envelope<\/span>\n\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-envelope\"><\/i>\t\t\t\t\t<\/a>\n\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9b0cac6\" data-id=\"9b0cac6\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-02ee44c elementor-button-align-stretch elementor-widget elementor-widget-form\" data-id=\"02ee44c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"Blog-Contact\" aria-label=\"Blog-Contact\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"56704\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"02ee44c\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Alloy 20 vs 28,What&#039;s The Difference? | Kaysuns\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"56704\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-email elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Email\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tMessage\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Message\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-upload elementor-field-group elementor-column elementor-field-group-field_e16bef1 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_e16bef1\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tYou can also send it to our email sales@kaysuns.com\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<input type=\"file\" name=\"form_fields[field_e16bef1][]\" id=\"form-field-field_e16bef1\" class=\"elementor-field elementor-size-sm  elementor-upload-field\" multiple=\"multiple\" data-maxsize=\"50\" data-maxsize-message=\"\u042d\u0442\u043e\u0442 \u0444\u0430\u0439\u043b \u043f\u0440\u0435\u0432\u044b\u0448\u0430\u0435\u0442 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u044b\u0439 \u0440\u0430\u0437\u043c\u0435\u0440.\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-recaptcha_v3 elementor-field-group elementor-column elementor-field-group-field_1051df5 elementor-col-100 recaptcha_v3-bottomright\">\n\t\t\t\t\t<div class=\"elementor-field\" id=\"form-field-field_1051df5\"><div class=\"elementor-g-recaptcha\" data-sitekey=\"6LdwwZUbAAAAAK75C0Nw7twMoqOmGrEq3AAkFLOy\" data-type=\"v3\" data-action=\"Form\" data-badge=\"bottomright\" data-size=\"invisible\"><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"featured_media":49141,"template":"","categories":[316,186,51],"tags":[],"class_list":["post-56704","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-blog","category-stainless-steel-knowledge","category-materials"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alloy 20 vs 28,What&#039;s The Difference? | Kaysuns<\/title>\n<meta name=\"description\" content=\"Alloy 20 withstands boiling sulfuric acid, while Alloy 28 handles high-pressure environments containing both hydrogen sulfide and chloride.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kaysuns.com\/pt\/blog\/liga-20-vs-28\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alloy 20 vs 28,What&#039;s The Difference? | Kaysuns\" \/>\n<meta property=\"og:description\" content=\"Alloy 20 withstands boiling sulfuric acid, while Alloy 28 handles high-pressure environments containing both hydrogen sulfide and chloride.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kaysuns.com\/pt\/blog\/liga-20-vs-28\/\" \/>\n<meta property=\"og:site_name\" content=\"Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-20T06:16:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2025\/03\/Alloy-28-P2-scaled-e1741673003960.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1262\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/\",\"url\":\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/\",\"name\":\"Alloy 20 vs 28,What's The Difference? | Kaysuns\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.kaysuns.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/Alloy-28-P2-scaled-e1741673003960.webp\",\"datePublished\":\"2026-01-20T06:12:23+00:00\",\"dateModified\":\"2026-01-20T06:16:19+00:00\",\"description\":\"Alloy 20 withstands boiling sulfuric acid, while Alloy 28 handles high-pressure environments containing both hydrogen sulfide and chloride.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/#breadcrumb\"},\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.kaysuns.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/Alloy-28-P2-scaled-e1741673003960.webp\",\"contentUrl\":\"https:\\\/\\\/www.kaysuns.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/Alloy-28-P2-scaled-e1741673003960.webp\",\"width\":2560,\"height\":1262,\"caption\":\"Alloy 28-P2 alloy 20 vs 28\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/alloy-20-vs-28\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.kaysuns.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Alloy 20 vs 28,What&#8217;s The Difference?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/#website\",\"url\":\"https:\\\/\\\/www.kaysuns.com\\\/\",\"name\":\"Stainless Steel Pipe and Fittings | KAYSUNS\",\"description\":\"Stainless Steel Pipe &amp; Fittings Manufacturer and Supplier in China\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/#organization\"},\"alternateName\":\"KAYSUNS\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.kaysuns.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"pt-BR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/#organization\",\"name\":\"Kaysuns Industry Ltd.\",\"url\":\"https:\\\/\\\/www.kaysuns.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.kaysuns.com\\\/wp-content\\\/uploads\\\/2019\\\/12\\\/cropped-neve-industrial-logo-1.png\",\"contentUrl\":\"https:\\\/\\\/www.kaysuns.com\\\/wp-content\\\/uploads\\\/2019\\\/12\\\/cropped-neve-industrial-logo-1.png\",\"width\":52,\"height\":59,\"caption\":\"Kaysuns Industry Ltd.\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kaysuns.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Liga 20 vs 28, qual \u00e9 a diferen\u00e7a? | Kaysuns","description":"A liga 20 suporta \u00e1cido sulf\u00farico em ebuli\u00e7\u00e3o, enquanto a liga 28 lida com ambientes de alta press\u00e3o que cont\u00eam sulfeto de hidrog\u00eanio e cloreto.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kaysuns.com\/pt\/blog\/liga-20-vs-28\/","og_locale":"pt_BR","og_type":"article","og_title":"Alloy 20 vs 28,What's The Difference? | Kaysuns","og_description":"Alloy 20 withstands boiling sulfuric acid, while Alloy 28 handles high-pressure environments containing both hydrogen sulfide and chloride.","og_url":"https:\/\/www.kaysuns.com\/pt\/blog\/liga-20-vs-28\/","og_site_name":"Stainless Steel Pipe and Fittings | KAYSUNS","article_modified_time":"2026-01-20T06:16:19+00:00","og_image":[{"width":2560,"height":1262,"url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2025\/03\/Alloy-28-P2-scaled-e1741673003960.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. tempo de leitura":"4 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/","url":"https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/","name":"Liga 20 vs 28, qual \u00e9 a diferen\u00e7a? | Kaysuns","isPartOf":{"@id":"https:\/\/www.kaysuns.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/#primaryimage"},"image":{"@id":"https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2025\/03\/Alloy-28-P2-scaled-e1741673003960.webp","datePublished":"2026-01-20T06:12:23+00:00","dateModified":"2026-01-20T06:16:19+00:00","description":"A liga 20 suporta \u00e1cido sulf\u00farico em ebuli\u00e7\u00e3o, enquanto a liga 28 lida com ambientes de alta press\u00e3o que cont\u00eam sulfeto de hidrog\u00eanio e cloreto.","breadcrumb":{"@id":"https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/#breadcrumb"},"inLanguage":"pt-BR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/"]}]},{"@type":"ImageObject","inLanguage":"pt-BR","@id":"https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/#primaryimage","url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2025\/03\/Alloy-28-P2-scaled-e1741673003960.webp","contentUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2025\/03\/Alloy-28-P2-scaled-e1741673003960.webp","width":2560,"height":1262,"caption":"Alloy 28-P2 alloy 20 vs 28"},{"@type":"BreadcrumbList","@id":"https:\/\/www.kaysuns.com\/blog\/alloy-20-vs-28\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.kaysuns.com\/"},{"@type":"ListItem","position":2,"name":"Alloy 20 vs 28,What&#8217;s The Difference?"}]},{"@type":"WebSite","@id":"https:\/\/www.kaysuns.com\/#website","url":"https:\/\/www.kaysuns.com\/","name":"Tubos e Conex\u00f5es de A\u00e7o Inoxid\u00e1vel | KAYSUNS","description":"Fabricante e fornecedor de tubos e conex\u00f5es de a\u00e7o inoxid\u00e1vel na China","publisher":{"@id":"https:\/\/www.kaysuns.com\/#organization"},"alternateName":"KAYSUNS","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kaysuns.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"pt-BR"},{"@type":"Organization","@id":"https:\/\/www.kaysuns.com\/#organization","name":"Ind\u00fastria Kaysuns Ltda.","url":"https:\/\/www.kaysuns.com\/","logo":{"@type":"ImageObject","inLanguage":"pt-BR","@id":"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png","contentUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png","width":52,"height":59,"caption":"Kaysuns Industry Ltd."},"image":{"@id":"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/blog\/56704","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/types\/blog"}],"version-history":[{"count":30,"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/blog\/56704\/revisions"}],"predecessor-version":[{"id":56826,"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/blog\/56704\/revisions\/56826"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/media\/49141"}],"wp:attachment":[{"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/media?parent=56704"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/categories?post=56704"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kaysuns.com\/pt\/wp-json\/wp\/v2\/tags?post=56704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}