{"id":57066,"date":"2026-01-28T06:00:50","date_gmt":"2026-01-28T06:00:50","guid":{"rendered":"https:\/\/www.kaysuns.com\/?post_type=blog&#038;p=57066"},"modified":"2026-02-02T03:10:59","modified_gmt":"2026-02-02T03:10:59","slug":"diferenca-entre-ss-304-e-430","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/diferenca-entre-ss-304-e-430\/","title":{"rendered":"Qual \u00e9 a diferen\u00e7a entre o a\u00e7o inoxid\u00e1vel 304 e 430?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"57066\" class=\"elementor elementor-57066\" data-elementor-post-type=\"blog\">\n\t\t\t\t<div class=\"elementor-element elementor-element-814114c e-flex e-con-boxed e-con e-parent\" data-id=\"814114c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a83ad66 elementor-widget elementor-widget-text-editor\" data-id=\"a83ad66\" data-element_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>304 e 430<\/strong> Os a\u00e7os inoxid\u00e1veis possuem composi\u00e7\u00f5es qu\u00edmicas distintas, que determinam seu desempenho em diferentes ambientes. A escolha do tipo errado pode levar a uma r\u00e1pida corros\u00e3o ou falha mec\u00e2nica.\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-c70e418 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c70e418\" data-element_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-a4be266\" data-id=\"a4be266\" data-element_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-5cdcc27 elementor-widget elementor-widget-heading\" data-id=\"5cdcc27\" data-element_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\">304 austen\u00edtico VS 430 ferr\u00edtico<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54fa715 elementor-widget elementor-widget-text-editor\" data-id=\"54fa715\" data-element_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\tA diferen\u00e7a mais importante entre o 304 e o 430 est\u00e1 em suas estruturas cristalinas. O a\u00e7o inoxid\u00e1vel 304 pertence \u00e0 fam\u00edlia \u201causten\u00edtica\u201d, em que seu alto teor de n\u00edquel altera o arranjo at\u00f4mico, tornando o metal n\u00e3o magn\u00e9tico e altamente d\u00factil.\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-3cf90c6 elementor-widget elementor-widget-text-editor\" data-id=\"3cf90c6\" data-element_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\tEm contrapartida, o a\u00e7o inoxid\u00e1vel 430 \u00e9 uma liga \u201cferr\u00edtica\u201d, que cont\u00e9m cromo, mas tem menor teor de n\u00edquel, o que o torna magn\u00e9tico e semelhante ao a\u00e7o carbono. Embora o 430 seja excelente em aplica\u00e7\u00f5es espec\u00edficas, sua adaptabilidade estrutural fica aqu\u00e9m do 304.\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-fede7d1 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fede7d1\" data-element_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-6bf484c\" data-id=\"6bf484c\" data-element_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-5da1f99 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"5da1f99\" data-element_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\">O que fazemos<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85fccb6 elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"85fccb6\" data-element_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>Placa<\/li><li>Folha<\/li><li>Forjados<\/li><li>Barra redonda<\/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-c1e91e3 elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"c1e91e3\" data-element_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>Mesa<\/li><li>Tubos<\/li><li>Conex\u00f5es<\/li><li>Personalizado<\/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-2686e2c\" data-id=\"2686e2c\" data-element_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-da8fd47 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"da8fd47\" data-element_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>Entre em contato conosco para obter mais informa\u00e7\u00f5es\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-2dda1fa elementor-align-center elementor-mobile-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"2dda1fa\" data-element_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\">Contate-nos<\/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\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8caa9b4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8caa9b4\" data-element_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-aca1624\" data-id=\"aca1624\" data-element_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-adfde31 elementor-widget elementor-widget-heading\" data-id=\"adfde31\" data-element_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\">304 e 430: composi\u00e7\u00e3o qu\u00edmica<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51f09ea elementor-widget elementor-widget-text-editor\" data-id=\"51f09ea\" data-element_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\tA \u201creceita\u201d qu\u00edmica do 304 e do 430 afeta diretamente sua capacidade de resistir \u00e0 ferrugem. O grau 304 normalmente inclui 18% de cromo e 8% de n\u00edquel. Essa combina\u00e7\u00e3o cria uma camada passiva muito est\u00e1vel na superf\u00edcie do metal.\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-69e26f2 elementor-widget elementor-widget-text-editor\" data-id=\"69e26f2\" data-element_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\tO grau 430 geralmente cont\u00e9m 16% a 18% de cromo, mas quase nenhum n\u00edquel (menos de 0,75%). Sem o n\u00edquel, a pel\u00edcula protetora de \u00f3xido \u00e9 menos robusta, o que torna o 430 mais suscet\u00edvel \u00e0 corros\u00e3o em ambientes \u00famidos ou salinos.\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-cfb0b5e elementor-widget elementor-widget-heading\" data-id=\"cfb0b5e\" data-element_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\">Compara\u00e7\u00e3o da composi\u00e7\u00e3o qu\u00edmica<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab475c1 elementor-widget elementor-widget-text-editor\" data-id=\"ab475c1\" data-element_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>Elemento (%)<\/th>\n<th>Grau 304<\/th>\n<th>Grau 430<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Cr<\/td>\n<td>18,0 \u2013 20,0<\/td>\n<td>16,0 \u2013 18,0<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Ni<\/td>\n<td>8,0 \u2013 10,5<\/td>\n<td>0,75 M\u00e1ximo<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Mn<\/td>\n<td>2,0 M\u00e1ximo<\/td>\n<td>1,0 M\u00e1ximo<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">C<\/td>\n<td>0,08 M\u00e1x.<\/td>\n<td>0,12 M\u00e1ximo<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Fe<\/td>\n<td>Equil\u00edbrio<\/td>\n<td>Equil\u00edbrio<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">C<\/td>\n<td>0,08 M\u00e1x.<\/td>\n<td>0,12 M\u00e1ximo<\/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<div class=\"elementor-element elementor-element-d5c79b1 e-flex e-con-boxed e-con e-parent\" data-id=\"d5c79b1\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-68bba46 elementor-widget elementor-widget-heading\" data-id=\"68bba46\" data-element_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\">304 e 430: propriedades mec\u00e2nicas<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6869d6d elementor-widget elementor-widget-text-editor\" data-id=\"6869d6d\" data-element_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>Propriedade<\/th>\n<th>Grau 304<\/th>\n<th>Grau 430<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Resist\u00eancia \u00e0 tra\u00e7\u00e3o, m\u00edn.<\/td>\n<td>75 ksi (515 MPa)<\/td>\n<td>65 ksi (450 MPa)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Resist\u00eancia ao escoamento (0,2%), m\u00edn.<\/td>\n<td>30 ksi (205 MPa)<\/td>\n<td>30 ksi (205 MPa)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Alongamento (em 2 pol. ou 50 mm), m\u00edn.<\/td>\n<td>40%<\/td>\n<td>22%<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Dureza, m\u00e1x.<\/td>\n<td>92 HRB (201 HBW)<\/td>\n<td>89 HRB (183 HBW)<\/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\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c43c579 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c43c579\" data-element_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-efd48e6\" data-id=\"efd48e6\" data-element_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-9cc82f6 elementor-widget elementor-widget-heading\" data-id=\"9cc82f6\" data-element_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\">304 e 430: a pontua\u00e7\u00e3o PREN<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d998935 elementor-widget elementor-widget-text-editor\" data-id=\"d998935\" data-element_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>Para ir al\u00e9m das descri\u00e7\u00f5es gerais, os engenheiros geralmente usam o termo <a href=\"https:\/\/www.kaysuns.com\/pt\/blog\/o-que-e-pren\/\" target=\"_blank\" rel=\"noopener\">N\u00famero equivalente de resist\u00eancia \u00e0 corros\u00e3o (PREN)<\/a> Como o Grau 304 geralmente cont\u00e9m tra\u00e7os de nitrog\u00eanio e mais cromo, sua pontua\u00e7\u00e3o PREN \u00e9 consistentemente maior do que a do Grau 430.<br \/>O valor PREN para o a\u00e7o inoxid\u00e1vel 304 \u00e9 <strong>18-20<\/strong>,enquanto a do a\u00e7o inoxid\u00e1vel 430 \u00e9 <strong>16-18<\/strong>.<\/p>\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-e787d3a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e787d3a\" data-element_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-f6c4f2f\" data-id=\"f6c4f2f\" data-element_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-b26b8f4 elementor-widget elementor-widget-heading\" data-id=\"b26b8f4\" data-element_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\">304 e 430: desempenho em sistemas de tubula\u00e7\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-608553a elementor-widget elementor-widget-heading\" data-id=\"608553a\" data-element_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\">Aplica\u00e7\u00e3o do grau 304<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-abb49bd elementor-widget elementor-widget-text-editor\" data-id=\"abb49bd\" data-element_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\tSelecionamos o material de grau 304 para a grande maioria de nossos <a href=\"https:\/\/www.kaysuns.com\/pt\/conexoes-para-tubos-de-aco-inoxidavel\/\" target=\"_blank\" rel=\"noopener\">conex\u00f5es para tubos de a\u00e7o inoxid\u00e1vel<\/a> Esse material mant\u00e9m a integridade em ambientes de baixa temperatura e resiste \u00e0 corros\u00e3o da maioria dos \u00e1cidos oxidantes. Para sistemas que transportam \u00e1gua, alimentos ou produtos qu\u00edmicos, o material Grau 304 \u00e9 a escolha padr\u00e3o do setor.\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-1277cbc elementor-widget elementor-widget-heading\" data-id=\"1277cbc\" data-element_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\">Aplica\u00e7\u00e3o do Grau 430<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84740b6 elementor-widget elementor-widget-text-editor\" data-id=\"84740b6\" data-element_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\tO a\u00e7o inoxid\u00e1vel grau 430 \u00e9 mais comumente usado em componentes de tubula\u00e7\u00e3o interna ou decorativa, como dutos de exaust\u00e3o de cozinha ou pe\u00e7as de acabamento de eletrodom\u00e9sticos. Devido \u00e0 aus\u00eancia de n\u00edquel, \u00e9 significativamente mais barato do que o grau 304. Entretanto, como se torna quebradi\u00e7o em baixas temperaturas e \u00e9 dif\u00edcil de soldar sem tratamento t\u00e9rmico especial, esse material raramente \u00e9 usado em sistemas de tubula\u00e7\u00e3o de a\u00e7o inoxid\u00e1vel de alta press\u00e3o.\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-19879dc e-flex e-con-boxed e-con e-parent\" data-id=\"19879dc\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-18c910f elementor-cta--layout-image-right elementor-cta--mobile-layout-image-above elementor-cta--skin-classic elementor-animated-content elementor-widget elementor-widget-call-to-action\" data-id=\"18c910f\" data-element_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\/2026\/01\/What-is-The-Difference-Between-Stainless-Steel-304-And-430-CTA-scaled-e1769579883358.webp);\" role=\"img\" aria-label=\"Qual \u00e9 a diferen\u00e7a entre o a\u00e7o inoxid\u00e1vel 304 e 430 - CTA\"><\/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\tSinta-se \u00e0 vontade para entrar em contato conosco\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\tA KAYSUNS oferece solu\u00e7\u00f5es em pacotes para materiais de tubula\u00e7\u00e3o, como tubos, conex\u00f5es, flanges, v\u00e1lvulas, placas, forjados, lingotes de a\u00e7o inoxid\u00e1vel, duplex e a\u00e7os-liga, todos os tipos de fixadores (parafusos, porcas, arruelas planas, arruelas de press\u00e3o) e outros produtos. Aceitamos servi\u00e7os personalizados para nossos produtos e alguns deles podem ser fornecidos em pequenas quantidades. Se tiver alguma d\u00favida sobre nossa empresa e nossos produtos, entre em contato conosco.\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\tObter cota\u00e7\u00e3o\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-e7d8e86 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e7d8e86\" data-element_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-aae8bbb\" data-id=\"aae8bbb\" data-element_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-6c12344 elementor-widget elementor-widget-heading\" data-id=\"6c12344\" data-element_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\">304 e 430: desafios de soldagem e fabrica\u00e7\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c34d1c0 elementor-widget elementor-widget-text-editor\" data-id=\"c34d1c0\" data-element_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\tA soldagem desses dois tipos diferentes de a\u00e7o inoxid\u00e1vel requer habilidades especializadas distintas. O a\u00e7o inoxid\u00e1vel 304 \u00e9 conhecido por sua excelente soldabilidade, n\u00e3o exigindo pr\u00e9-aquecimento ou resfriamento complexo ap\u00f3s a soldagem. <a href=\"https:\/\/www.kaysuns.com\/pt\/flange-de-aco-inoxidavel-2\/\" target=\"_blank\" rel=\"noopener\">Flange de a\u00e7o inoxid\u00e1vel 304<\/a> usando m\u00e9todos de soldagem padr\u00e3o TIG (Tungsten Inert Gas) ou MIG (Metal Inert Gas).\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-9596187 elementor-widget elementor-widget-text-editor\" data-id=\"9596187\" data-element_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\tNo entanto, a soldagem do a\u00e7o inoxid\u00e1vel 430 \u00e9 significativamente mais desafiadora, pois o calor gerado pelo arco provoca o crescimento de gr\u00e3os met\u00e1licos, resultando em soldas fracas e quebradi\u00e7as. Para garantir uma conex\u00e3o de flange robusta, os profissionais quase sempre optam pelo a\u00e7o inoxid\u00e1vel 304.\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-a52e546 elementor-widget elementor-widget-heading\" data-id=\"a52e546\" data-element_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\">Guia pr\u00e1tico de sele\u00e7\u00e3o para engenheiros<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e663c1 elementor-widget elementor-widget-text-editor\" data-id=\"3e663c1\" data-element_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>Propriedade<\/th>\n<th>Grau 304<\/th>\n<th>Grau 430<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Resist\u00eancia \u00e0 corros\u00e3o<\/td>\n<td>Excelente (alto)<\/td>\n<td>Moderado (Baixo)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Soldabilidade<\/td>\n<td>Excepcional<\/td>\n<td>Ruim \/ desafiador<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Custo<\/td>\n<td>Maior (devido ao n\u00edquel)<\/td>\n<td>Inferior (econ\u00f4mico)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Caso de uso ideal<\/td>\n<td>Tubula\u00e7\u00e3o de processo e flanges<\/td>\n<td>Ambiente decorativo e seco<\/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<div class=\"elementor-element elementor-element-8e0e2c9 elementor-widget elementor-widget-text-editor\" data-id=\"8e0e2c9\" data-element_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\tO material de grau 304 apresenta uma taxa de alongamento de aproximadamente 40%, o que permite que seja dobrado em formas complexas sem rachaduras. Em contrapartida, o material de grau 430 apresenta ductilidade significativamente menor (aproximadamente 20%). Em baixas temperaturas, os acess\u00f3rios para tubos de grau 430 tornam-se fr\u00e1geis, o que representa um risco de \u201crachaduras por tens\u00e3o\u201d em sistemas de tubula\u00e7\u00e3o de alta vibra\u00e7\u00e3o.\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-cfad243 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cfad243\" data-element_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-121d2b8\" data-id=\"121d2b8\" data-element_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-cd5ad62 elementor-widget elementor-widget-heading\" data-id=\"cd5ad62\" data-element_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\">Resist\u00eancia \u00e0 corros\u00e3o: corros\u00e3o por pite e oxida\u00e7\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e145647 elementor-widget elementor-widget-text-editor\" data-id=\"e145647\" data-element_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\tAo comparar o 304 e o 430, \u00e9 preciso considerar a \u201cresist\u00eancia \u00e0 corros\u00e3o\u201d. O grau 304 lida com \u00edons de cloreto (como o sal) muito melhor do que o 430. Se um tubo 430 ficar em um ambiente \u00famido ou salgado, ele desenvolver\u00e1 pequenos pontos de ferrugem rapidamente.\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-9752d37 elementor-widget elementor-widget-text-editor\" data-id=\"9752d37\" data-element_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\tO a\u00e7o inoxid\u00e1vel 304 mant\u00e9m uma pel\u00edcula de \u00f3xido resiliente e autocicatrizante devido ao seu teor de n\u00edquel, o que significa que, mesmo que ocorram arranh\u00f5es na superf\u00edcie, o tubo pode se reparar instantaneamente. Para infraestruturas cr\u00edticas, essa capacidade de \u201cautocicatriza\u00e7\u00e3o\u201d compensa suficientemente o custo adicional, pois evita vazamentos perigosos e prolonga a vida \u00fatil de toda a rede de tubula\u00e7\u00f5es.\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-34f20e0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"34f20e0\" data-element_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-529ea98\" data-id=\"529ea98\" data-element_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-cd7a2b5 elementor-widget elementor-widget-heading\" data-id=\"cd7a2b5\" data-element_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\">Contate-nos<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f6622ad elementor-widget-divider--view-line_text elementor-widget-divider--element-align-left elementor-widget elementor-widget-divider\" data-id=\"f6622ad\" data-element_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\tEntre em contato\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-05144c7 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=\"05144c7\" data-element_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\/pt\/\" 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-d206e44 elementor-widget-divider--view-line_text elementor-widget-divider--element-align-left elementor-widget elementor-widget-divider\" data-id=\"d206e44\" data-element_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\tEncontre-nos\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-be1dd4d e-grid-align-left elementor-shape-square elementor-grid-0 elementor-widget elementor-widget-social-icons\" 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