{"id":5824,"date":"2020-04-15T07:14:59","date_gmt":"2020-04-15T07:14:59","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5824"},"modified":"2025-07-01T06:35:24","modified_gmt":"2025-07-01T06:35:24","slug":"classes-de-classificacao-e-padroes-de-aco-inoxidavel-duplex","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/classes-de-classificacao-e-padroes-de-aco-inoxidavel-duplex\/","title":{"rendered":"Classifica\u00e7\u00e3o, classes e padr\u00f5es do a\u00e7o inoxid\u00e1vel duplex"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Introdu\u00e7\u00e3o de a\u00e7o inoxid\u00e1vel duplex<\/h2>\n\n\n\n<p>O a\u00e7o inoxid\u00e1vel duplex se refere ao material cuja microestrutura \u00e9 composta de ferrita e austenita, cada uma representando cerca de 50%. Em uso real, um deles \u00e9 mais adequado entre 40-60%.<\/p>\n\n\n\n<p>De acordo com as caracter\u00edsticas das duas estruturas, atrav\u00e9s do controle correto da composi\u00e7\u00e3o qu\u00edmica e do processo de tratamento t\u00e9rmico, a excelente tenacidade e soldabilidade do a\u00e7o inoxid\u00e1vel austen\u00edtico s\u00e3o combinadas com a maior resist\u00eancia e resist\u00eancia \u00e0 corros\u00e3o sob tens\u00e3o do cloreto do a\u00e7o inoxid\u00e1vel ferr\u00edtico. a\u00e7o inoxid\u00e1vel um tipo de a\u00e7o que combina excelente resist\u00eancia \u00e0 corros\u00e3o, alta resist\u00eancia e f\u00e1cil processamento e fabrica\u00e7\u00e3o.<\/p>\n\n\n\n<p>As propriedades f\u00edsicas do a\u00e7o inoxid\u00e1vel duplex est\u00e3o entre o a\u00e7o inoxid\u00e1vel austen\u00edtico e o a\u00e7o inoxid\u00e1vel ferr\u00edtico, mas est\u00e3o mais pr\u00f3ximas do a\u00e7o inoxid\u00e1vel ferr\u00edtico e do a\u00e7o carbono.<\/p>\n\n\n\n<p>A resist\u00eancia \u00e0 corros\u00e3o e a resist\u00eancia \u00e0 corros\u00e3o em fendas dos tubos de a\u00e7o inoxid\u00e1vel duplex est\u00e3o relacionadas ao teor de cromo, <a href=\"https:\/\/www.kaysuns.com\/pt\/papel-do-molibdenio-em-tubos-e-conexoes-de-aco-inoxidavel\/\" target=\"_blank\">molibd\u00eanio<\/a> e nitrog\u00eanio. A resist\u00eancia \u00e0 corros\u00e3o e a resist\u00eancia \u00e0 corros\u00e3o em fendas de <a href=\"https:\/\/www.kaysuns.com\/pt\/duplex-2205-stainless-steel-pipe\/\" target=\"_blank\">tubos de a\u00e7o inoxid\u00e1vel duplex<\/a> pode ser semelhante a <a href=\"https:\/\/www.kaysuns.com\/pt\/tubo-de-aco-inoxidavel-soldado\/\" target=\"_blank\">316 tubos de a\u00e7o inoxid\u00e1vel<\/a> ou mais alto que a \u00e1gua do mar <a href=\"https:\/\/www.kaysuns.com\/pt\/tubos-de-aco-inoxidavel\/\" target=\"_blank\">tubos de a\u00e7o inoxid\u00e1vel<\/a> como tubo de a\u00e7o inoxid\u00e1vel 6%.<\/p>\n\n\n\n<p>Todos os a\u00e7os inoxid\u00e1veis duplex s\u00e3o significativamente mais resistentes ao cloreto <a href=\"https:\/\/www.kaysuns.com\/pt\/rachaduras-por-corrosao-sob-tensao-em-aco-inoxidavel\/\" target=\"_blank\">rachaduras por corros\u00e3o sob tens\u00e3o<\/a> do que os a\u00e7os inoxid\u00e1veis austen\u00edticos da s\u00e9rie 300, e sua resist\u00eancia \u00e9 muito maior do que a dos a\u00e7os inoxid\u00e1veis austen\u00edticos. Eles tamb\u00e9m apresentam boa plasticidade e resist\u00eancia.<\/p>\n\n\n\n<p>O a\u00e7o inoxid\u00e1vel duplex pode ser geralmente dividido em quatro tipos: tipo de baixa liga, tipo de liga m\u00e9dia, tipo de alta liga e tipo de a\u00e7o inoxid\u00e1vel super duplex.<\/p>\n\n\n\n<p>Confira nosso <a href=\"https:\/\/www.kaysuns.com\/pt\/noticias\/lista-de-estoque-de-tubos-super-duplex-2507\/\" target=\"_blank\">Lista de estoque de tubos Super Duplex 2507<\/a> aqui.<\/p>\n\n\n\n<p><strong>Os graus comuns de a\u00e7o inoxid\u00e1vel duplex e a compara\u00e7\u00e3o aproximada dos graus s\u00e3o os seguintes:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table width=\"80%\" border=\"1\" align=\"center\" cellpadding=\"1\" cellspacing=\"1\">\n  <tr>\n    <td bgcolor=\"#00a0e9\"><strong>Tipos \/ Pa\u00edses<\/strong><\/td>\n    <td bgcolor=\"#00a0e9\"><strong>CHINA<\/strong><\/td>\n    <td bgcolor=\"#00a0e9\"><strong>EUA<\/strong><\/td>\n    <td bgcolor=\"#00a0e9\"><strong>SWEFEN<\/strong><\/td>\n    <td bgcolor=\"#00a0e9\"><strong>ALEMANHA<\/strong><\/td>\n    <td bgcolor=\"#00a0e9\"><strong>FRAN\u00c7A<\/strong><\/td>\n    <td bgcolor=\"#00a0e9\"><strong>JAP\u00c3O<\/strong><\/td>\n  <\/tr>\n  <tr>\n    <td rowspan=\"2\" bgcolor=\"#00a0e9\"><strong>tipo de baixa liga<\/strong><\/td>\n    <td>00Cr23Ni4N<\/td>\n    <td>UN23<\/td>\n    <td>SS232<\/td>\n    <td>W\uff0eNr.1.4362<\/td>\n    <td>UR35N<\/td>\n    <td>DP11<\/td>\n  <\/tr>\n  <tr>\n    <td><\/td>\n    <td>(SAF2304)<\/td>\n    <td>(SAF2304)<\/td>\n    <td><\/td>\n    <td><\/td>\n    <td><\/td>\n  <\/tr>\n  <tr>\n    <td rowspan=\"2\" bgcolor=\"#00a0e9\"><strong>tipo de liga m\u00e9dia<\/strong><\/td>\n    <td>00Cr18Ni5Mo3Si2<\/td>\n    <td>UNS S31500<\/td>\n    <td>SS2376 (3RE60)<\/td>\n    <td>W.Nr.1.4417<\/td>\n    <td>UR45N<\/td>\n    <td>DP1<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr22Ni5Mo3N<\/td>\n    <td>UNS S31803<\/td>\n    <td>SS2377 (SAF2205)<\/td>\n    <td>W.Nr.1.4462<\/td>\n    <td><\/td>\n    <td>DP8<\/td>\n  <\/tr>\n  <tr>\n    <td rowspan=\"2\" bgcolor=\"#00a0e9\"><strong>tipo de alta liga<\/strong><\/td>\n    <td>0Cr25Ni5Mo2<\/td>\n    <td>UNS S32900<\/td>\n    <td>SS2324 (10RE51)<\/td>\n    <td>W.Nr.1.4460<\/td>\n    <td><\/td>\n    <td>329J1<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr25Ni7Mo3WCuN<\/td>\n    <td>UNS S31260<\/td>\n    <td><\/td>\n    <td>W.Nr.1.4501<\/td>\n    <td><\/td>\n    <td>329J2L<\/td>\n  <\/tr>\n  <tr>\n    <td rowspan=\"2\" bgcolor=\"#00a0e9\"><strong>tipo super duplex de a\u00e7o inoxid\u00e1vel<\/strong><\/td>\n    <td>00Cr25Ni7Mo4N<\/td>\n    <td>UNS S32750<\/td>\n    <td>SS2328 (SAF2507)<\/td>\n    <td>W.Nr.1.4410<\/td>\n    <td><\/td>\n    <td>UR47N +<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr25Ni6Mo3CuN<\/td>\n    <td>UNS S32550<\/td>\n    <td><\/td>\n    <td>W.Nr.1.4507<\/td>\n    <td><\/td>\n    <td>UR52N +<\/td>\n  <\/tr>\n<\/table><\/figure>\n\n\n\n<p><strong>Desempenho de a\u00e7os inoxid\u00e1veis duplex:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1. Composi\u00e7\u00e3o qu\u00edmica (%)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table width=\"80%\" border=\"1\" align=\"center\" cellpadding=\"1\" cellspacing=\"1\">\n  <tr>\n    <td bgcolor=\"#00a0e9\">Notas<\/td>\n    <td bgcolor=\"#00a0e9\">C\u2264<\/td>\n    <td bgcolor=\"#00a0e9\">Mn\u2264<\/td>\n    <td bgcolor=\"#00a0e9\">Si\u2264<\/td>\n    <td bgcolor=\"#00a0e9\">S\u2264<\/td>\n    <td bgcolor=\"#00a0e9\">P\u2264<\/td>\n    <td bgcolor=\"#00a0e9\">Cr<\/td>\n    <td bgcolor=\"#00a0e9\">Ni<\/td>\n    <td bgcolor=\"#00a0e9\">Mo<\/td>\n    <td bgcolor=\"#00a0e9\">Cu\u2264<\/td>\n    <td bgcolor=\"#00a0e9\">N<\/td>\n  <\/tr>\n  <tr>\n    <td>S32750 (SAF2507)<\/td>\n    <td rowspan=\"2\">0.03<\/td>\n    <td rowspan=\"2\">1.2<\/td>\n    <td rowspan=\"2\">0.8<\/td>\n    <td rowspan=\"2\">0.02<\/td>\n    <td rowspan=\"2\">0.035<\/td>\n    <td>24.0<\/td>\n    <td>6.0<\/td>\n    <td>3.0<\/td>\n    <td rowspan=\"2\">0.5<\/td>\n    <td>0.24<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr22Ni7Mo4N<\/td>\n    <td>26<\/td>\n    <td>8<\/td>\n    <td>5<\/td>\n    <td>0.32<\/td>\n  <\/tr>\n  <tr>\n    <td>S31803 (SAF2205)<\/td>\n    <td rowspan=\"2\">0.03<\/td>\n    <td rowspan=\"2\">2<\/td>\n    <td rowspan=\"2\">1<\/td>\n    <td rowspan=\"2\">0.02<\/td>\n    <td rowspan=\"2\">0.03<\/td>\n    <td>21.0<\/td>\n    <td>4.50<\/td>\n    <td>2.50<\/td>\n    <td rowspan=\"2\">\u3000<\/td>\n    <td>0.08<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr22Ni5Mo3N<\/td>\n    <td>23<\/td>\n    <td>6.5<\/td>\n    <td>3.5<\/td>\n    <td>0.2<\/td>\n  <\/tr>\n  <tr>\n    <td>S31500 (3RE60)<\/td>\n    <td rowspan=\"2\">0.03<\/td>\n    <td>1.2<\/td>\n    <td>1.    4<\/td>\n    <td rowspan=\"2\">0.03<\/td>\n    <td rowspan=\"2\">0.03<\/td>\n    <td>18.0<\/td>\n    <td>4.25<\/td>\n    <td>2.50<\/td>\n    <td rowspan=\"2\">\u3000<\/td>\n    <td>0.05<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr18Ni5Mo3Si2<\/td>\n    <td>2<\/td>\n    <td>2<\/td>\n    <td>19<\/td>\n    <td>5.25<\/td>\n    <td>2<\/td>\n    <td>0.1<\/td>\n  <\/tr>\n<\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2. Composi\u00e7\u00e3o qu\u00edmica (%)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table width=\"80%\" border=\"1\" align=\"center\" cellpadding=\"1\" cellspacing=\"1\">\n  <tr>\n    <td bgcolor=\"#00a0e9\">\u3000<\/td>\n    <td nowrap=\"nowrap\" bgcolor=\"#00a0e9\">Temperatura de tratamento t\u00e9rmico \u2103<\/td>\n    <td nowrap=\"nowrap\" bgcolor=\"#00a0e9\">Ab \uff08MPa\uff09 \u2265<\/td>\n    <td nowrap=\"nowrap\" bgcolor=\"#00a0e9\">Como \uff08MPa\uff09 \u2265<\/td>\n    <td nowrap=\"nowrap\" bgcolor=\"#00a0e9\">\u222e\u2265<\/td>\n    <td nowrap=\"nowrap\" bgcolor=\"#00a0e9\">Dureza Brinell<\/td>\n    <td nowrap=\"nowrap\" bgcolor=\"#00a0e9\">dureza Rockwell<\/td>\n  <\/tr>\n  <tr>\n    <td>S32750 \uff08SAF2507\uff09<\/td>\n    <td>1025-1125<\/td>\n    <td rowspan=\"2\">800<\/td>\n    <td rowspan=\"2\">550<\/td>\n    <td rowspan=\"2\">15<\/td>\n    <td rowspan=\"2\">310<\/td>\n    <td rowspan=\"2\">32<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr22Ni5Mo3N<\/td>\n    <td>AGUA<\/td>\n  <\/tr>\n  <tr>\n    <td>S31803 \uff08SAF2205\uff09<\/td>\n    <td rowspan=\"2\">1020-1100<\/td>\n    <td rowspan=\"2\">620<\/td>\n    <td rowspan=\"2\">450<\/td>\n    <td rowspan=\"2\">25<\/td>\n    <td rowspan=\"2\">290<\/td>\n    <td rowspan=\"2\">30.5<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr22Ni5Mo3N<\/td>\n  <\/tr>\n  <tr>\n    <td>S31500 \uff083RE60\uff09<\/td>\n    <td rowspan=\"2\">980-1040<\/td>\n    <td rowspan=\"2\">630<\/td>\n    <td rowspan=\"2\">440<\/td>\n    <td rowspan=\"2\">30<\/td>\n    <td rowspan=\"2\">290<\/td>\n    <td rowspan=\"2\">30.5<\/td>\n  <\/tr>\n  <tr>\n    <td>00Cr18Ni5Mo3Si2<\/td>\n  <\/tr>\n<\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3. A faixa de temperatura de uso cont\u00ednuo do a\u00e7o inoxid\u00e1vel duplex \u00e9 de -50 \u2103 -60 \u2103. A temperatura de trabalho a quente n\u00e3o deve ser inferior a 950 \u2103.<\/li>\n<\/ul>","protected":false},"featured_media":5188,"template":"","categories":[186],"tags":[],"class_list":["post-5824","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Classification, Grades And Standards Of Duplex Stainless Steel - Stainless Steel Pipe and Fittings | KAYSUNS<\/title>\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\/classes-de-classificacao-e-padroes-de-aco-inoxidavel-duplex\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Classification, Grades And Standards Of Duplex Stainless Steel - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"Duplex stainless steel introduction Duplex stainless steel refers to the material whose microstructure is composed of ferrite and austenite, each of which accounts for about 50%. 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