{"id":11324,"date":"2026-05-02T11:13:23","date_gmt":"2026-05-02T03:13:23","guid":{"rendered":"https:\/\/www.cncmachiningshops.com\/?page_id=11324"},"modified":"2026-05-02T22:23:05","modified_gmt":"2026-05-02T14:23:05","slug":"pren-calculator","status":"publish","type":"page","link":"https:\/\/www.cncmachiningshops.com\/pt\/tools\/pren-calculator\/","title":{"rendered":"Calculadora PREN"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:20px;--awb-padding-bottom:20px;--awb-background-color:var(--awb-color8);--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1280px + 80px );margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:30px;--awb-spacing-right-large:25px;--awb-margin-bottom-large:30px;--awb-spacing-left-large:15px;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:25px;--awb-spacing-left-medium:15px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><nav class=\"fusion-breadcrumbs awb-yoast-breadcrumbs fusion-breadcrumbs-1\" style=\"--awb-text-color:var(--awb-color2);--awb-breadcrumb-sep:&#039;\/&#039;;\" aria-label=\"Breadcrumb\"><span><span><a href=\"https:\/\/www.cncmachiningshops.com\/pt\/\">Casa<\/a><\/span><\/span><\/nav><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one\" style=\"--awb-text-color:var(--awb-color1);--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h1 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:capitalize;\">Calculadora PREN<\/h1><\/div><div class=\"fusion-separator\" style=\"align-self: flex-start;margin-right:auto;margin-bottom:10px;width:100%;max-width:80px;\"><div class=\"fusion-separator-border sep-single sep-solid\" style=\"--awb-height:20px;--awb-amount:20px;--awb-sep-color:var(--awb-color4);border-color:var(--awb-color4);border-top-width:3px;\"><\/div><\/div><div class=\"fusion-text fusion-text-1\" style=\"--awb-content-alignment:left;--awb-text-color:var(--awb-color2);\"><p data-start=\"58\" data-end=\"267\">Calcular o <strong data-start=\"72\" data-end=\"119\">N\u00famero Equivalente de Resist\u00eancia \u00e0 Pitting (PREN)<\/strong> para avaliar a <strong data-start=\"136\" data-end=\"191\">resist\u00eancia \u00e0 corros\u00e3o de a\u00e7os inoxid\u00e1veis e ligas<\/strong>, especialmente em ambientes com cloretos (por exemplo, \u00e1gua do mar, processamento qu\u00edmico).<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:28px;--awb-padding-right:48px;--awb-padding-bottom:47px;--awb-padding-left:40px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1280px + 80px );margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:10px;--awb-margin-bottom-large:20px;--awb-spacing-left-large:10px;--awb-width-medium:66.666666666667%;--awb-order-medium:0;--awb-spacing-right-medium:10px;--awb-spacing-left-medium:10px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\">    <div class=\"cms-mm-calculator mc-calculator mc-pren-calculator\" data-type=\"pren-calculator\">\r\n        <h2>PREN<br>Calculadora<\/h2>\r\n\r\n        <div class=\"mc-formula-box\">\r\n            PREN = %Cr + 3,3\u00d7(%Mo + 0,5\u00d7%W) + 16\u00d7%N\r\n        <\/div>\r\n\r\n        <div class=\"cms-calc-field\">\r\n            <label>Cromo <span class=\"mc-unit-lower\">(Cr %)<\/span><\/label>\r\n            <div class=\"cms-input-row\">\r\n                <input type=\"text\" data-field=\"cr\" placeholder=\"por exemplo, 18,0\" inputmode=\"decimal\" autocomplete=\"off\">\r\n                <span class=\"cms-unit\">Cr%<\/span>\r\n            <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"cms-calc-field\">\r\n            <label>Molibd\u00eanio <span class=\"mc-unit-lower\">(Mo %)<\/span><\/label>\r\n            <div class=\"cms-input-row\">\r\n                <input type=\"text\" data-field=\"mo\" placeholder=\"por exemplo, 2,5\" inputmode=\"decimal\" autocomplete=\"off\">\r\n                <span class=\"cms-unit\">Mo%<\/span>\r\n            <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"cms-calc-field\">\r\n            <label>Tungst\u00e9nio <span class=\"mc-unit-lower\">(W %)<\/span><\/label>\r\n            <div class=\"cms-input-row\">\r\n                <input type=\"text\" data-field=\"w\" placeholder=\"por exemplo, 0,0\" inputmode=\"decimal\" autocomplete=\"off\">\r\n                <span class=\"cms-unit\">W%<\/span>\r\n            <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"cms-calc-field\">\r\n            <label>Nitrog\u00eanio <span class=\"mc-unit-lower\">(N %)<\/span><\/label>\r\n            <div class=\"cms-input-row\">\r\n                <input type=\"text\" data-field=\"n\" placeholder=\"por exemplo, 0,1\" inputmode=\"decimal\" autocomplete=\"off\">\r\n                <span class=\"cms-unit\">N%<\/span>\r\n            <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"cms-result-box\" data-result>\r\n            <div class=\"cms-result-line cms-result-primary\">PREN: 0<\/div>\r\n            <div class=\"cms-result-line\">Insira os valores da composi\u00e7\u00e3o da liga<\/div>\r\n        <\/div>\r\n\r\n        <div class=\"cms-calc-footer\">\r\n            <div class=\"cms-brand\">\u00a9 CMS TECHNOLOGY<\/div>\r\n            <div class=\"cms-actions\">\r\n                <button type=\"button\" class=\"cms-reset-btn\" data-action=\"reset\">REINICIAR<\/button>\r\n                <button type=\"button\" class=\"cms-copy-btn\" data-action=\"copy\">COPIAR<\/button>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n    <div class=\"fusion-text fusion-text-2\"><h2 data-section-id=\"xgv4vw\" data-start=\"274\" data-end=\"289\">Resposta r\u00e1pida<\/h2>\n<p data-start=\"291\" data-end=\"345\">\ud83d\udc49 O PREN indica resist\u00eancia \u00e0 <strong data-start=\"323\" data-end=\"344\">corros\u00e3o por pitting<\/strong>:<\/p>\n<ul data-start=\"347\" data-end=\"394\">\n<li data-section-id=\"1m4bsge\" data-start=\"347\" data-end=\"394\"><strong data-start=\"349\" data-end=\"394\">PREN mais alto = Melhor resist\u00eancia \u00e0 corros\u00e3o<\/strong><\/li>\n<\/ul>\n<p data-start=\"396\" data-end=\"413\">\u2714 Faixas t\u00edpicas:<\/p>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"415\" data-end=\"632\">\n<thead data-start=\"415\" data-end=\"452\">\n<tr data-start=\"415\" data-end=\"452\">\n<th class=\"\" data-start=\"415\" data-end=\"438\" data-col-size=\"sm\">Tipo de material<\/th>\n<th class=\"\" data-start=\"438\" data-end=\"452\" data-col-size=\"sm\">Valor PREN<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"489\" data-end=\"632\">\n<tr data-start=\"489\" data-end=\"524\">\n<td data-start=\"489\" data-end=\"511\" data-col-size=\"sm\">A\u00e7o inoxid\u00e1vel 304<\/td>\n<td data-col-size=\"sm\" data-start=\"511\" data-end=\"524\">~18\u201320<\/td>\n<\/tr>\n<tr data-start=\"525\" data-end=\"560\">\n<td data-start=\"525\" data-end=\"547\" data-col-size=\"sm\">A\u00e7o Inoxid\u00e1vel 316<\/td>\n<td data-col-size=\"sm\" data-start=\"547\" data-end=\"560\">~23\u201328<\/td>\n<\/tr>\n<tr data-start=\"561\" data-end=\"596\">\n<td data-start=\"561\" data-end=\"583\" data-col-size=\"sm\">A\u00e7o inoxid\u00e1vel duplex<\/td>\n<td data-col-size=\"sm\" data-start=\"583\" data-end=\"596\">~30\u201340<\/td>\n<\/tr>\n<tr data-start=\"597\" data-end=\"632\">\n<td data-start=\"597\" data-end=\"619\" data-col-size=\"sm\">Super Duplex<\/td>\n<td data-col-size=\"sm\" data-start=\"619\" data-end=\"632\">&gt;40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"634\" data-end=\"637\" \/>\n<h2 data-section-id=\"1bn3cmi\" data-start=\"639\" data-end=\"668\">F\u00f3rmula (C\u00e1lculo do PREN)<\/h2>\n<p data-start=\"670\" data-end=\"749\">A f\u00f3rmula do PREN considera os elementos de liga que melhoram a resist\u00eancia \u00e0 corros\u00e3o:<\/p>\n<ul data-start=\"751\" data-end=\"926\">\n<li data-section-id=\"38m6y6\" data-start=\"751\" data-end=\"796\">Cromo (Cr) \u2192 resist\u00eancia \u00e0 corros\u00e3o base<\/li>\n<li data-section-id=\"asu3z5\" data-start=\"797\" data-end=\"837\">Molibd\u00eanio (Mo) \u2192 resist\u00eancia ao pitting<\/li>\n<li data-section-id=\"ut1yro\" data-start=\"838\" data-end=\"875\">Tungst\u00eanio (W) \u2192 potencializa o efeito do Mo<\/li>\n<li data-section-id=\"1xg2epm\" data-start=\"876\" data-end=\"926\">Nitrog\u00eanio (N) \u2192 aumenta significativamente a resist\u00eancia<\/li>\n<\/ul>\n<p data-start=\"928\" data-end=\"971\">\ud83d\udc49 Consulte a f\u00f3rmula acima para o c\u00e1lculo exato.<\/p>\n<hr data-start=\"973\" data-end=\"976\" \/>\n<h2 data-section-id=\"1rtmmsk\" data-start=\"978\" data-end=\"1000\">Exemplo de C\u00e1lculo<\/h2>\n<p data-start=\"1002\" data-end=\"1008\">Dado:<\/p>\n<ul data-start=\"1010\" data-end=\"1060\">\n<li data-section-id=\"1ryn9rc\" data-start=\"1010\" data-end=\"1022\">Cr = 18%<\/li>\n<li data-section-id=\"1aij8wr\" data-start=\"1023\" data-end=\"1036\">Mo = 2,5%<\/li>\n<li data-section-id=\"hck4k7\" data-start=\"1037\" data-end=\"1047\">W = 0%<\/li>\n<li data-section-id=\"150lqfl\" data-start=\"1048\" data-end=\"1060\">N = 0,1%<\/li>\n<\/ul>\n<p data-start=\"1062\" data-end=\"1139\">\ud83d\udc49 PREN =<br data-start=\"1071\" data-end=\"1074\" \/>18 + 3.3 \u00d7 (2.5 + 0) + 16 \u00d7 0.1<br data-start=\"1105\" data-end=\"1108\" \/>= 18 + 8.25 + 1.6<br data-start=\"1125\" data-end=\"1128\" \/>= <strong data-start=\"1130\" data-end=\"1139\">27.85<\/strong><\/p>\n<p data-start=\"1141\" data-end=\"1192\">\u2714 Equivalente a <strong data-start=\"1157\" data-end=\"1192\">Desempenho do a\u00e7o inoxid\u00e1vel 316<\/strong><\/p>\n<hr data-start=\"1194\" data-end=\"1197\" \/>\n<h2 data-section-id=\"j85kk7\" data-start=\"1199\" data-end=\"1228\">Como utilizar esta calculadora<\/h2>\n<ol data-start=\"1230\" data-end=\"1409\">\n<li data-section-id=\"7gca25\" data-start=\"1230\" data-end=\"1260\">Entrar <strong data-start=\"1239\" data-end=\"1258\">Cromo (Cr %)<\/strong><\/li>\n<li data-section-id=\"5fr2gl\" data-start=\"1261\" data-end=\"1293\">Entrar <strong data-start=\"1270\" data-end=\"1291\">Molibd\u00eanio (Mo %)<\/strong><\/li>\n<li data-section-id=\"189e9nm\" data-start=\"1294\" data-end=\"1347\">Entrar <strong data-start=\"1303\" data-end=\"1321\">Tungst\u00eanio (W %)<\/strong> (opcional, padr\u00e3o = 0)<\/li>\n<li data-section-id=\"1gswgcf\" data-start=\"1348\" data-end=\"1377\">Entrar <strong data-start=\"1357\" data-end=\"1375\">Nitrog\u00eanio (N %)<\/strong><\/li>\n<li data-section-id=\"12dpz8k\" data-start=\"1378\" data-end=\"1409\">Obtenha imediatamente <strong data-start=\"1395\" data-end=\"1409\">Valor PREN<\/strong><\/li>\n<\/ol>\n<p data-start=\"1411\" data-end=\"1469\">\u2714 C\u00e1lculo em tempo real<br data-start=\"1434\" data-end=\"1437\" \/>\u2714 Ideal para sele\u00e7\u00e3o de material<\/p>\n<hr data-start=\"1471\" data-end=\"1474\" \/>\n<h2 data-section-id=\"1gs45up\" data-start=\"1476\" data-end=\"1502\">Aplica\u00e7\u00f5es comuns na engenharia<\/h2>\n<h3 data-section-id=\"xxoomd\" data-start=\"1504\" data-end=\"1556\">Sele\u00e7\u00e3o de Material para Ambientes Corrosivos<\/h3>\n<ul data-start=\"1557\" data-end=\"1619\">\n<li data-section-id=\"10n84gc\" data-start=\"1557\" data-end=\"1619\">Compare a\u00e7os inoxid\u00e1veis para exposi\u00e7\u00e3o \u00e0 \u00e1gua do mar ou produtos qu\u00edmicos<\/li>\n<\/ul>\n<h3 data-section-id=\"1x28rg5\" data-start=\"1621\" data-end=\"1657\">Engenharia Offshore e Mar\u00edtima<\/h3>\n<ul data-start=\"1658\" data-end=\"1707\">\n<li data-section-id=\"ukgric\" data-start=\"1658\" data-end=\"1707\">Garanta resist\u00eancia adequada ao ataque de cloretos<\/li>\n<\/ul>\n<h3 data-section-id=\"1t6ns0u\" data-start=\"1709\" data-end=\"1745\">Equipamentos de Processamento Qu\u00edmico<\/h3>\n<ul data-start=\"1746\" data-end=\"1791\">\n<li data-section-id=\"hr8snp\" data-start=\"1746\" data-end=\"1791\">Selecione ligas para ambientes agressivos<\/li>\n<\/ul>\n<h3 data-section-id=\"18rw8bq\" data-start=\"1793\" data-end=\"1826\">Compara\u00e7\u00e3o de A\u00e7os Inoxid\u00e1veis<\/h3>\n<ul data-start=\"1827\" data-end=\"1873\">\n<li data-section-id=\"9fbig1\" data-start=\"1827\" data-end=\"1873\">Compare graus como 304 vs 316 vs duplex<\/li>\n<\/ul>\n<hr data-start=\"1875\" data-end=\"1878\" \/>\n<h2 data-section-id=\"9zde04\" data-start=\"1880\" data-end=\"1914\">Valores T\u00edpicos de PREN (Refer\u00eancia)<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1916\" data-end=\"2117\">\n<thead data-start=\"1916\" data-end=\"1948\">\n<tr data-start=\"1916\" data-end=\"1948\">\n<th class=\"\" data-start=\"1916\" data-end=\"1940\" data-col-size=\"sm\">Material<\/th>\n<th class=\"\" data-start=\"1940\" data-end=\"1948\" data-col-size=\"sm\">PREN<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1981\" data-end=\"2117\">\n<tr data-start=\"1981\" data-end=\"2014\">\n<td data-start=\"1981\" data-end=\"2004\" data-col-size=\"sm\">A\u00e7o Inoxid\u00e1vel 304<\/td>\n<td data-col-size=\"sm\" data-start=\"2004\" data-end=\"2014\">~18\u201320<\/td>\n<\/tr>\n<tr data-start=\"2015\" data-end=\"2048\">\n<td data-start=\"2015\" data-end=\"2038\" data-col-size=\"sm\">A\u00e7o Inoxid\u00e1vel 316<\/td>\n<td data-col-size=\"sm\" data-start=\"2038\" data-end=\"2048\">~24\u201328<\/td>\n<\/tr>\n<tr data-start=\"2049\" data-end=\"2082\">\n<td data-start=\"2049\" data-end=\"2072\" data-col-size=\"sm\">Duplex 2205<\/td>\n<td data-col-size=\"sm\" data-start=\"2072\" data-end=\"2082\">~34\u201336<\/td>\n<\/tr>\n<tr data-start=\"2083\" data-end=\"2117\">\n<td data-start=\"2083\" data-end=\"2106\" data-col-size=\"sm\">Super Duplex 2507<\/td>\n<td data-col-size=\"sm\" data-start=\"2106\" data-end=\"2117\">~40\u201345+<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"2119\" data-end=\"2122\" \/>\n<h2 data-section-id=\"9ghvog\" data-start=\"2124\" data-end=\"2142\">Notas importantes<\/h2>\n<ul data-start=\"2144\" data-end=\"2314\">\n<li data-section-id=\"8c6vt6\" data-start=\"2144\" data-end=\"2209\">PREN \u00e9 um <strong data-start=\"2157\" data-end=\"2180\">indicador emp\u00edrico<\/strong>, n\u00e3o uma garantia absoluta<\/li>\n<li data-section-id=\"13wz9l2\" data-start=\"2210\" data-end=\"2314\">N\u00e3o considera:\n<ul data-start=\"2236\" data-end=\"2314\">\n<li data-section-id=\"rxdb2m\" data-start=\"2236\" data-end=\"2254\">Acabamento da superf\u00edcie<\/li>\n<li data-section-id=\"hss1va\" data-start=\"2257\" data-end=\"2276\">Efeitos da soldagem<\/li>\n<li data-section-id=\"1cl3lo1\" data-start=\"2279\" data-end=\"2314\">Corros\u00e3o sob tens\u00e3o ou temperatura<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"2316\" data-end=\"2385\">\ud83d\udc49 Sempre valide com testes no mundo real para aplica\u00e7\u00f5es cr\u00edticas.<\/p>\n<hr data-start=\"2387\" data-end=\"2390\" \/>\n<h2 data-section-id=\"hey7oh\" data-start=\"2392\" data-end=\"2408\">Ferramentas Relacionadas<\/h2>\n<ul data-start=\"2410\" data-end=\"2522\">\n<li data-section-id=\"vhyef8\" data-start=\"2410\" data-end=\"2437\"><strong data-start=\"2412\" data-end=\"2437\">Localizador de grau de material<\/strong><\/li>\n<li data-section-id=\"2sf08u\" data-start=\"2438\" data-end=\"2465\"><strong data-start=\"2440\" data-end=\"2465\">Ferramenta de compara\u00e7\u00e3o de ligas<\/strong><\/li>\n<li data-section-id=\"1gfq4oc\" data-start=\"2466\" data-end=\"2490\"><strong data-start=\"2468\" data-end=\"2490\">Calculadora de densidade<\/strong><\/li>\n<li data-section-id=\"1exfdma\" data-start=\"2491\" data-end=\"2522\"><strong data-start=\"2493\" data-end=\"2522\">Calculadora de acabamento de superf\u00edcie<\/strong><\/li>\n<\/ul>\n<hr data-start=\"2524\" data-end=\"2527\" \/>\n<h2 data-section-id=\"1hryhf7\" data-start=\"2529\" data-end=\"2535\">Perguntas frequentes<\/h2>\n<h3 data-section-id=\"1tlrz1c\" data-start=\"2537\" data-end=\"2554\">O que \u00e9 PREN?<\/h3>\n<p data-start=\"2555\" data-end=\"2651\">PREN significa <strong data-start=\"2571\" data-end=\"2611\">N\u00famero Equivalente de Resist\u00eancia \u00e0 Pitting<\/strong>, usado para estimar a resist\u00eancia \u00e0 corros\u00e3o.<\/p>\n<h3 data-section-id=\"c3b29\" data-start=\"2653\" data-end=\"2683\">Por que o nitrog\u00eanio \u00e9 importante?<\/h3>\n<p data-start=\"2684\" data-end=\"2748\">O nitrog\u00eanio tem um <strong data-start=\"2699\" data-end=\"2725\">forte efeito positivo<\/strong> na resist\u00eancia \u00e0 pitting.<\/p>\n<h3 data-section-id=\"wc5waa\" data-start=\"2750\" data-end=\"2783\">Um PREN mais alto \u00e9 sempre melhor?<\/h3>\n<p data-start=\"2784\" data-end=\"2861\">Sim para resist\u00eancia \u00e0 corros\u00e3o, mas pode aumentar o custo e a dificuldade de usinagem.<\/p>\n<h3 data-section-id=\"1rd9zni\" data-start=\"2863\" data-end=\"2902\">O PREN pode substituir os testes de corros\u00e3o?<\/h3>\n<p data-start=\"2903\" data-end=\"2964\">N\u00e3o, \u00e9 apenas uma <strong data-start=\"2920\" data-end=\"2933\">diretriz<\/strong>, n\u00e3o um substituto para testes.<\/p>\n<h3 data-section-id=\"19st3ex\" data-start=\"2966\" data-end=\"3006\">Qual material tem o PREN mais alto?<\/h3>\n<p data-start=\"3007\" data-end=\"3078\">\ud83d\udc49 <strong data-start=\"3010\" data-end=\"3043\">A\u00e7os inoxid\u00e1veis super duplex<\/strong> geralmente t\u00eam os valores mais altos.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_3 1_3 fusion-flex-column\" 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alert-dismissable awb-alert-close-boxed\" style=\"--awb-margin-top:30px;\" role=\"alert\"><div class=\"fusion-alert-content-wrapper\"><span class=\"alert-icon\"><i class=\"awb-icon-exclamation-triangle\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-alert-content\">Ocorreu um erro ao tentar enviar sua mensagem. Por favor, tente novamente mais tarde.<\/span><\/div><button type=\"button\" class=\"close toggle-alert\" data-dismiss=\"alert\" aria-label=\"Close\">\u00d7<\/button><\/div><\/div><\/div><\/div><\/div><\/div><input type=\"hidden\" name=\"fusion_privacy_store_ip_ua\" value=\"true\"><input type=\"hidden\" name=\"trp-form-language\" value=\"pt\"\/><\/form><\/div><\/div>\n\t\t<div id=\"recent-posts-2\" class=\"widget widget_recent_entries\" style=\"border-style: solid;border-color:transparent;border-width:0px;\">\n\t\t<div class=\"heading\"><h4 class=\"widget-title\">Publica\u00e7\u00f5es recentes<\/h4><\/div>\n\t\t<ul>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/1045-vs-4140-steel\/\">A\u00e7o 1045 vs 4140: Como escolher o material certo em termos de resist\u00eancia, vida \u00fatil \u00e0 fadiga e custo de maquinagem<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/automotive-bolts-and-screws-how-to-select-fasteners-for-safety-vibration-resistance-and-long-term-reliability\/\">Parafusos e porcas para a ind\u00fastria autom\u00f3vel: Como selecionar elementos de fixa\u00e7\u00e3o que garantam seguran\u00e7a, resist\u00eancia \u00e0 vibra\u00e7\u00e3o e fiabilidade a longo prazo<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/cnc-machining-aluminum-parts\/\">Maquina\u00e7\u00e3o CNC de pe\u00e7as de alum\u00ednio: como escolher o tipo de alum\u00ednio, o design e a estrat\u00e9gia de fabrico adequados<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/copper-vs-steel\/\">Cobre vs. a\u00e7o: que material deve escolher em termos de condutividade, resist\u00eancia e custo?<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/nickel-plating-stainless-steel\/\">Niquelagem do a\u00e7o inoxid\u00e1vel: quando melhora o desempenho e quando n\u00e3o compensa o custo<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/brass-or-bronze\/\">Lat\u00e3o ou bronze: qual \u00e9 o melhor em termos de resist\u00eancia, resist\u00eancia ao desgaste, prote\u00e7\u00e3o contra a corros\u00e3o e maquinagem CNC?<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/machining-carbon-fiber-parts\/\">Maquina\u00e7\u00e3o de pe\u00e7as em fibra de carbono: custo, qualidade e sele\u00e7\u00e3o do processo<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/metal-strength-chart\/\">Tabela de resist\u00eancia dos metais: Como escolher o material certo<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/polish-polycarbonate-2\/\">Policarbonato polaco: qual \u00e9 o m\u00e9todo que proporciona o melhor acabamento transparente?<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/www.cncmachiningshops.com\/pt\/metal-plating-process\/\">Sele\u00e7\u00e3o do processo de galvaniza\u00e7\u00e3o: como escolher o revestimento adequado<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t<\/ul>\n\n\t\t<\/div><div class=\"fusion-additional-widget-content\"><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:78px;--awb-padding-bottom:78px;--awb-background-color:var(--awb-color7);--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1280px + 80px );margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-5 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-padding-top:27px;--awb-padding-bottom:18px;--awb-bg-size:cover;--awb-width-large:100%;--awb-flex-grow:0;--awb-flex-shrink:0;--awb-margin-top-large:0px;--awb-spacing-right-large:40px;--awb-margin-bottom-large:20px;--awb-spacing-left-large:40px;--awb-width-medium:100%;--awb-order-medium:0;--awb-flex-grow-medium:;--awb-flex-shrink-medium:;--awb-spacing-right-medium:40px;--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-order-small:0;--awb-flex-grow-small:;--awb-flex-shrink-small:;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-two\" style=\"--awb-text-color:var(--awb-color1);--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h2 class=\"fusion-title-heading title-heading-center\" style=\"margin:0;text-transform:capitalize;\">Precisa de Pe\u00e7as Usinadas CNC Resistentes \u00e0 Corros\u00e3o?<\/h2><\/div><div class=\"fusion-text fusion-text-3\" style=\"--awb-content-alignment:left;--awb-text-color:var(--awb-color2);--awb-margin-left:20px;\"><p data-start=\"3139\" data-end=\"3195\">Selecionar a liga correta garante desempenho a longo prazo.<\/p>\n<p data-start=\"3197\" data-end=\"3209\">\ud83d\udc49 Oferecemos:<\/p>\n<ul data-start=\"3210\" data-end=\"3420\">\n<li data-section-id=\"12jjecj\" data-start=\"3210\" data-end=\"3265\">Usinagem CNC para a\u00e7os inoxid\u00e1veis e superligas<\/li>\n<li data-section-id=\"1um29a3\" data-start=\"3266\" data-end=\"3323\">Suporte na sele\u00e7\u00e3o de materiais para ambientes corrosivos<\/li>\n<li data-section-id=\"9liya3\" data-start=\"3324\" data-end=\"3383\">Orienta\u00e7\u00e3o de engenharia para aplica\u00e7\u00f5es mar\u00edtimas e qu\u00edmicas<\/li>\n<li data-section-id=\"16y38gb\" data-start=\"3384\" data-end=\"3420\">Or\u00e7amentos r\u00e1pidos e entregas em todo o mundo<\/li>\n<\/ul>\n<\/div><div class=\"fusion-text fusion-text-4\" style=\"--awb-content-alignment:center;--awb-font-size:20px;--awb-text-color:var(--awb-color2);\"><p>Fa\u00e7a o upload do seu arquivo CAD hoje e obtenha uma solu\u00e7\u00e3o resistente \u00e0 corros\u00e3o.<\/p>\n<\/div><div style=\"text-align:center;\"><a class=\"fusion-button button-flat button-xlarge button-custom fusion-button-default button-2 fusion-button-span-yes fusion-button-default-type\" style=\"--button_accent_color:var(--awb-color1);--button_accent_hover_color:var(--awb-color1);--button_border_hover_color:var(--awb-color4);--button_gradient_top_color:var(--awb-color4);--button_gradient_bottom_color:var(--awb-color4);--button_gradient_top_color_hover:var(--awb-color8);--button_gradient_bottom_color_hover:var(--awb-color8);\" target=\"_self\" href=\"https:\/\/www.cncmachiningshops.com\/pt\/instant-free-quote\/\"><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Enviar consulta<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":11185,"menu_order":87,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"footnotes":""},"class_list":["post-11324","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PREN Calculator<\/title>\n<meta name=\"description\" content=\"Calculate the Pitting Resistance Equivalent Number (PREN) to evaluate the corrosion resistance of stainless steels and alloys, especially in chloride environments (e.g., seawater, chemical processing).\" \/>\n<meta name=\"robots\" content=\"index, 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