{"id":6159,"date":"2020-06-17T06:28:30","date_gmt":"2020-06-17T06:28:30","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6159"},"modified":"2025-07-09T06:49:50","modified_gmt":"2025-07-09T06:49:50","slug":"qual-e-a-diferenca-entre-a-astm-a249-e-a-astm-a269","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/qual-e-a-diferenca-entre-a-astm-a249-e-a-astm-a269\/","title":{"rendered":"Qual \u00e9 a diferen\u00e7a entre ASTM A249 e ASTM A269"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Diferen\u00e7a: ASTM A249, ASTM A269 <\/h2>\n\n\n\n<p>Ambos ASTM A269 e ASTM A249 podem ser usados para soldar <a href=\"https:\/\/www.kaysuns.com\/pt\/tubulacoes-de-aco-inoxidavel\/\" target=\"_blank\" rel=\"noreferrer noopener\">tubos de a\u00e7o inoxid\u00e1vel<\/a>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"586\" height=\"430\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/06\/ASTM-A249-pipes.jpg\" alt=\"Tubos ASTM A249\" class=\"wp-image-6160\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/06\/ASTM-A249-pipes.jpg 586w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/06\/ASTM-A249-pipes-300x220.jpg 300w\" sizes=\"(max-width: 586px) 100vw, 586px\" \/><figcaption class=\"wp-element-caption\">Tubos ASTM A249<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Especifica\u00e7\u00e3o da norma ASTM A249 \/ A249M para soldagem de caldeiras de a\u00e7o austen\u00edtico, superaquecedores, trocadores de calor e tubos condensadores.<\/p>\n\n\n\n<p>Especifica\u00e7\u00e3o padr\u00e3o ASTM A269 \/ A269M para <a href=\"https:\/\/www.kaysuns.com\/pt\/tubo-de-aco-inoxidavel-sem-costura-3\/\" target=\"_blank\">tubos de a\u00e7o inoxid\u00e1vel sem costura<\/a> e <a href=\"https:\/\/www.kaysuns.com\/pt\/tubo-de-aco-inoxidavel-soldado\/\" target=\"_blank\">tubos de a\u00e7o inoxid\u00e1vel soldados<\/a> para servi\u00e7o geral.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Compara\u00e7\u00e3o de ASTM A249 e ASTM A269<\/h3>\n\n\n\n<p>As especifica\u00e7\u00f5es ASTM A249 e ASTM A269 s\u00e3o dois padr\u00f5es para tubos de a\u00e7o inoxid\u00e1vel austen\u00edtico. Eles t\u00eam os mesmos requisitos t\u00e9cnicos, mas existem algumas diferen\u00e7as.<\/p>\n\n\n\n<table width=\"80%\" border=\"1\" align=\"center\" cellpadding=\"1\" cellspacing=\"1\" class=\"table table-hover\">\n    <tr>\n      <th bgcolor=\"#00a0e9\">Especifica\u00e7\u00e3o<\/th>\n      <th bgcolor=\"#00a0e9\"><strong>ASTM A249<\/strong><\/th>\n      <th bgcolor=\"#00a0e9\"><strong>ASTM 269<\/strong><\/th>\n    <\/tr>\n  <tbody>\n    <tr>\n      <td>Fabrica\u00e7\u00e3o de tubos<\/td>\n      <td>Soldado<\/td>\n      <td>Soldado e sem costura<\/td>\n    <\/tr>\n    <tr>\n      <td>Aplica\u00e7\u00e3o<\/td>\n      <td>Caldeira<br \/>\n        Superaquecedor<br \/>\n        Trocador de calor<br \/>\n        Condensador<\/td>\n      <td>Servi\u00e7o geral<\/td>\n    <\/tr>\n    <tr>\n      <td>Tamanhos<\/td>\n      <td>OD: m\u00e1ximo 304,8 mm<br \/>\n        Espessura da parede: 0,4 - 8,1 mm<\/td>\n      <td>Di\u00e2metro interno: m\u00ednimo 3,4 mm<br \/>\n        Espessura da parede: 0,51 mm<\/td>\n    <\/tr>\n    <tr>\n      <td>ASTM \/ ASME<\/td>\n      <td>ASTM A249<br \/>\n        ASME SA249<\/td>\n      <td>ASTM A269 \/ A269M<\/td>\n    <\/tr>\n    <tr>\n      <td>Teste<\/td>\n      <td>Teste de Flange<\/td>\n      <td>Teste de Flange<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n\n\n<h3 class=\"wp-block-heading\">Intervalos de aplica\u00e7\u00e3o<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Os tubos soldados ASTM A249 s\u00e3o usados em caldeiras, superaquecedores, trocadores de calor, sistemas condensadores e equipamentos de press\u00e3o para transfer\u00eancia de calor. Semelhante a ASTM A213 para especifica\u00e7\u00f5es padr\u00e3o de tubo de a\u00e7o sem costura.<\/li>\n\n\n\n<li>Os tubos ASTM A269 s\u00e3o geralmente usados para fins gerais, geralmente usados em equipamentos e instrumentos, e tamb\u00e9m s\u00e3o adequados para ambientes de baixa ou alta temperatura. Portanto, os tubos ASTM A269 tamb\u00e9m s\u00e3o usados para equipamentos de transfer\u00eancia de calor.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Materiais e classes<\/h3>\n\n\n\n<p>As especifica\u00e7\u00f5es ASTM A249 e ASTM A269 indicam que o material do tubo \u00e9 a\u00e7o inoxid\u00e1vel austen\u00edtico, que \u00e9 amplamente utilizado nas fam\u00edlias de a\u00e7o inoxid\u00e1vel, TP304, TP304L, TP316, TP316L, TP347, TP347H, TP321, TP321H, grau 904L \u00e9 o material ideal para v\u00e1rias aplica\u00e7\u00f5es, eles tem algumas vantagens que outros a\u00e7os n\u00e3o t\u00eam.<\/p>\n\n\n\n<p>No entanto, em alguns casos, grau de a\u00e7o inoxid\u00e1vel ferr\u00edtico e <a href=\"https:\/\/www.kaysuns.com\/pt\/duplex-2205-stainless-steel-pipe\/\" target=\"_blank\">Tubos de a\u00e7o inoxid\u00e1vel duplex<\/a> s\u00e3o produzidos em conformidade com o padr\u00e3o A249 ou A269, os tubos de a\u00e7o ferr\u00edtico podem reduzir custos e os tubos de a\u00e7o duplex aumentam a resist\u00eancia e a longevidade.<\/p>\n\n\n\n<p><strong>Graus comuns de ASTM A249<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ASTM A249 TP304<\/li>\n\n\n\n<li>ASTM A249 TP304L<\/li>\n\n\n\n<li>ASTM A249 TP316 \/ 316L<\/li>\n\n\n\n<li>ASME SA249 TP304<\/li>\n\n\n\n<li>ASME SA249 TP316L<\/li>\n<\/ul>\n\n\n\n<p><strong>Graus comuns de ASTM A269<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ASTM A269 TP304<\/li>\n\n\n\n<li>ASTM A269 TP304L<\/li>\n\n\n\n<li>ASTM A269 TP316<\/li>\n\n\n\n<li>ASTM A269 TP316L<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Dimens\u00f5es de ASTM A249 e ASTM A269<\/h3>\n\n\n\n<p>O tamanho do tubo ASTM A249 e a espessura da parede s\u00e3o: 1\/8 pol. (3,2 mm) de di\u00e2metro interno a 12 pol. (304,8 mm) de di\u00e2metro externo, 0,015 pol. A 0,32 pol. (0,4 - 8,1 mm). O tamanho e a espessura do tubo de acordo com ASTM A269 s\u00e3o 1\/4 pol. (6,4 mm) no di\u00e2metro interno, que \u00e9 maior, e 0,020 pol. (0,51 mm) na espessura nominal da parede ou mais pesado.<\/p>\n\n\n\n<p>As dimens\u00f5es do tubo s\u00e3o expressas em polegadas ou mil\u00edmetros e, \u00e0s vezes, especifica\u00e7\u00f5es (BWG) s\u00e3o especificadas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Toler\u00e2ncias de ASTM A249 e ASTM A269<\/h3>\n\n\n\n<p>As toler\u00e2ncias dimensionais dos tubos soldados ASTM A249 e ASTM A269 est\u00e3o em conformidade com ASTM A1016, as diferen\u00e7as s\u00e3o mostradas na tabela abaixo:<\/p>\n\n\n\n<table width=\"80%\" border=\"1\" class=\"table table-hover\" align=\"center\" cellpadding=\"1\" cellspacing=\"1\">\n    <tr>\n      <th bgcolor=\"#00a0e9\">Especifica\u00e7\u00e3o<\/th>\n      <th bgcolor=\"#00a0e9\">Di\u00e2metro Exterior<\/th>\n      <th bgcolor=\"#00a0e9\">Di\u00e2metro Exterior<\/th>\n      <th bgcolor=\"#00a0e9\">Espessura da parede<\/th>\n      <th bgcolor=\"#00a0e9\">Comprimento<\/th>\n    <\/tr>\n  <tbody>\n    <tr>\n      <td>A249<\/td>\n      <td>\uff1c 25,40 mm<\/td>\n      <td>\u00b1 0,10 mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A249<\/td>\n      <td>\u226525,4mm ~ 38,1mm<\/td>\n      <td>\u00b1 0,15 mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A249<\/td>\n      <td>\u226538,1mm ~ 50,8mm<\/td>\n      <td>\u00b1 0,20 mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A249<\/td>\n      <td>\u226550,8mm ~ 63,5mm<\/td>\n      <td>\u00b1 0,25 mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A249<\/td>\n      <td>\u226563,5mm ~ 76,2mm<\/td>\n      <td>\u00b1 0,30 mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A249<\/td>\n      <td>\u226576,2mm ~ 101,6mm<\/td>\n      <td>\u00b1 0,38 mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A249<\/td>\n      <td>\u2265101,6mm ~ 190,5mm<\/td>\n      <td>+ 0,38 mm -0,64 mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A249<\/td>\n      <td>\u2265190,5mm ~ 228,6mm<\/td>\n      <td>+ 0,38mm -1,14mm<\/td>\n      <td>\u00b1 10.00%<\/td>\n      <td>OD \uff1c 50,8 mm (-0, + 3,0 mm)<br \/>\n        OD\u226550,8 mm (-0, + 5,0 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A269<\/td>\n      <td>\uff1c 38,1 mm<\/td>\n      <td>\u00b1 0,13 mm<\/td>\n      <td>OD \uff1c 12,7 mm \u00b1 15%<br \/>\n        OD\u226512,7mm \u00b1 10%<\/td>\n      <td>OD \uff1c 38,1 mm (-0, + 3,20 mm)<br \/>\n        OD\u226538,1 mm (-0, + 4,80 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A269<\/td>\n      <td>\u226538,1mm ~ 88,9mm<\/td>\n      <td>\u00b1 0,25 mm<\/td>\n      <td>OD \uff1c 12,7 mm \u00b1 15%<br \/>\n        OD\u226512,7mm \u00b1 10%<\/td>\n      <td>OD \uff1c 38,1 mm (-0, + 3,20 mm)<br \/>\n        OD\u226538,1 mm (-0, + 4,80 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A269<\/td>\n      <td>\u226588,9mm ~ 139,7mm<\/td>\n      <td>\u00b1 0,38 mm<\/td>\n      <td>OD \uff1c 12,7 mm \u00b1 15%<br \/>\n        OD\u226512,7mm \u00b1 10%<\/td>\n      <td>OD \uff1c 38,1 mm (-0, + 3,20 mm)<br \/>\n        OD\u226538,1 mm (-0, + 4,80 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A269<\/td>\n      <td>\u2265139,7mm ~ 203,7mm<\/td>\n      <td>\u00b1 0,76 mm<\/td>\n      <td>OD \uff1c 12,7 mm \u00b1 15%<br \/>\n        OD\u226512,7mm \u00b1 10%<\/td>\n      <td>OD \uff1c 38,1 mm (-0, + 3,20 mm)<br \/>\n        OD\u226538,1 mm (-0, + 4,80 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A269<\/td>\n      <td>\u2265203,7mm ~ 304,8mm<\/td>\n      <td>\u00b1 1,01 mm<\/td>\n      <td>OD \uff1c 12,7 mm \u00b1 15%<br \/>\n        OD\u226512,7mm \u00b1 10%<\/td>\n      <td>OD \uff1c 38,1 mm (-0, + 3,20 mm)<br \/>\n        OD\u226538,1 mm (-0, + 4,80 mm)<\/td>\n    <\/tr>\n    <tr>\n      <td>A269<\/td>\n      <td>\u2265304,8mm ~ 355,6mm<\/td>\n      <td>\u00b1 1,26 mm<\/td>\n      <td>OD \uff1c 12,7 mm \u00b1 15%<br \/>\n        OD\u226512,7mm \u00b1 10%<\/td>\n      <td>OD \uff1c 38,1 mm (-0, + 3,20 mm)<br \/>\n        OD\u226538,1 mm (-0, + 4,80 mm)<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n\n\n<h3 class=\"wp-block-heading\">Processo de Fabrica\u00e7\u00e3o<\/h3>\n\n\n\n<p>ASTM A249 indica que os tubos soldados devem ser trabalhados ou trefilados a frio antes do tratamento t\u00e9rmico final. Os tubos ASTM A269 devem ser processados a frio ou a quente, soldados ou sem costura.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Teste e controle de qualidade<\/h3>\n\n\n\n<p><strong>Superf\u00edcie<\/strong>: Ambas as especifica\u00e7\u00f5es ASTM A249 e ASTM A269, ap\u00f3s o tratamento t\u00e9rmico, <a href=\"https:\/\/www.kaysuns.com\/pt\/tubulacoes-de-aco-inoxidavel\/\" target=\"_blank\">tubula\u00e7\u00f5es de a\u00e7o inoxid\u00e1vel<\/a> deve ser decapado sem incrusta\u00e7\u00f5es, quando o recozimento brilhante \u00e9 usado, a decapagem n\u00e3o \u00e9 necess\u00e1ria.<\/p>\n\n\n\n<p><strong>Tratamento t\u00e9rmico<\/strong>: Todos os tubos sob as normas ASTM A249 e ASTM A269 devem ser tratados termicamente, a menos que em condi\u00e7\u00f5es especiais, haja diferentes temperaturas de recozimento para diferentes materiais.<\/p>\n\n\n\n<p><strong>Propriedades mec\u00e2nicas:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ASTM A249: aplainamento, flange e flex\u00e3o reversa, teste de tra\u00e7\u00e3o e dureza.<\/li>\n\n\n\n<li>ASTM A269: teste de alargamento para tubos sem costura, teste de flange para tubos soldados, teste de aplanamento reverso e teste de dureza.<\/li>\n<\/ul>\n\n\n\n<p><strong><a href=\"https:\/\/www.kaysuns.com\/pt\/blog\/como-verificar-os-danos-sem-danificar-os-tubos-de-aco-inoxidavel\/\" target=\"_blank\">Teste N\u00e3o Destrutivo<\/a><\/strong>: Cada tubo deve ser conduzido para o teste n\u00e3o destrutivo ou o teste hidrost\u00e1tico, em muitos casos, teste n\u00e3o destrutivo refere-se ao teste de correntes parasitas ou teste de ar subaqu\u00e1tico.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Padr\u00e3o de certifica\u00e7\u00e3o dupla<\/h4>\n\n\n\n<p>Os usu\u00e1rios devem distinguir entre as especifica\u00e7\u00f5es ASTM A249 e ASTM A269, embora sejam padr\u00f5es t\u00edpicos para requisitos t\u00e9cnicos de tubos de a\u00e7o inoxid\u00e1vel, mas diferentes.<\/p>\n\n\n\n<p>Em alguns casos, os usu\u00e1rios exigem que os tubos de a\u00e7o inoxid\u00e1vel estejam em conformidade com a norma dual certificada A249\/A269, isto significa que os tubos devem estar em conformidade tanto com a ASTM A249 quanto com a ASTM A269, e obter o melhor valor ou resultado especificado nas duas especifica\u00e7\u00f5es, os tubos ser\u00e3o de alta qualidade.<\/p>\n\n\n\n<p>ASME SA249 \u00e9 o mesmo padr\u00e3o com a especifica\u00e7\u00e3o ASTM A249, ASME SA-249 \u00e9 publicado pela ASME, mas ASME n\u00e3o tem padr\u00e3o equivalente com ASTM A269.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Dimens\u00e3o comum de tubos ASTM A249 \/ A269<\/h3>\n\n\n\n<table class=\"table table-hover\" width=\"80%\" cellspacing=\"1\" cellpadding=\"1\" border=\"1\" align=\"center\">\n  <thead>\n    <tr>\n      <th bgcolor=\"#00a0e9\">O.D.<\/th>\n      <th bgcolor=\"#00a0e9\">mm<\/th>\n      <th bgcolor=\"#00a0e9\">Espessura da parede<\/th>\n      <th bgcolor=\"#00a0e9\">mm<\/th>\n      <th bgcolor=\"#00a0e9\">Comprimento<\/th>\n      <th bgcolor=\"#00a0e9\">Notas<\/th>\n      <th bgcolor=\"#00a0e9\">Modelo<\/th>\n      <th bgcolor=\"#00a0e9\">Especifica\u00e7\u00e3o<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>1\/2 \u201d<\/td>\n      <td>12.70<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>3\/4 \u201d<\/td>\n      <td>19.05<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>1 \u201d<\/td>\n      <td>25.4<\/td>\n      <td>0,049 \u201d<\/td>\n      <td>1.24<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>1 \u201d<\/td>\n      <td>25.4<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>11\/2 \u201d<\/td>\n      <td>38.10<\/td>\n      <td>0,049 \u201d<\/td>\n      <td>1.24<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>11\/2 \u201d<\/td>\n      <td>38.10<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>2 \u201d<\/td>\n      <td>50.80<\/td>\n      <td>0,049 \u201d<\/td>\n      <td>1.24<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>2 \u201d<\/td>\n      <td>50.80<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>21\/2 \u201d<\/td>\n      <td>63.50<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>3 \u201d<\/td>\n      <td>76.20<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>4 \u201d<\/td>\n      <td>101.60<\/td>\n      <td>0,065 \u201d<\/td>\n      <td>1.65<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>4 \u201d<\/td>\n      <td>101.60<\/td>\n      <td>0,083 \u201d<\/td>\n      <td>2.11<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>6 \u201d<\/td>\n      <td>152.40<\/td>\n      <td>0,083 \u201d<\/td>\n      <td>2.11<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>6 \u201d<\/td>\n      <td>152.40<\/td>\n      <td>0,109 \u201d<\/td>\n      <td>2.77<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>8 \u201d<\/td>\n      <td>203.20<\/td>\n      <td>0,109 \u201d<\/td>\n      <td>2.77<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>10 \u201d<\/td>\n      <td>254.00<\/td>\n      <td>0,134 \u201d<\/td>\n      <td>3.40<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>12 \u201d<\/td>\n      <td>304.80<\/td>\n      <td>0,134 \u201d<\/td>\n      <td>3.40<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n    <tr>\n      <td>14 \u201d<\/td>\n      <td>355.60<\/td>\n      <td>0,134 \u201d<\/td>\n      <td>3.40<\/td>\n      <td>10 \u2032 - 20 \u2032<\/td>\n      <td>304 \/ 304L \/ 316L<\/td>\n      <td>Soldado<\/td>\n      <td>A249 \/ A269 \/ A270<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>","protected":false},"featured_media":0,"template":"","categories":[186],"tags":[],"class_list":["post-6159","blog","type-blog","status-publish","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>What&#039;s the Difference Between ASTM A249 and ASTM A269 | Duplex Pipe<\/title>\n<meta name=\"description\" content=\"The ASTM A249 and ASTM A269 specifications are two standards for austenitic stainless steel pipes. 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