{"id":6159,"date":"2020-06-17T06:28:30","date_gmt":"2020-06-17T06:28:30","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6159"},"modified":"2026-06-04T09:03:21","modified_gmt":"2026-06-04T09:03:21","slug":"qual-e-a-diferenca-entre-a-astm-a249-e-a-astm-a269","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/whats-the-difference-between-astm-a249-and-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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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><a href=\"https:\/\/www.kaysuns.com\/pt\/blog\/o-que-e-um-tubo-astm-a269\/\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM A269 tubes<\/a> are generally used for general purposes, usually used in equipment and instruments, and are also suitable for low or high temperature environments. Therefore, ASTM A269 tubes are also used for heat transfer equipment.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Materiais e classes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">ASTM A249 indicates that welded pipes should be cold worked or cold drawn before final heat treatment. ASTM A269 tubes shall be cold or hot processed welded or seamless.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Teste e controle de qualidade<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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\">Common Dimension Of ASTM A249 \/ A269 Tubes <\/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 v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\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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