{"id":466,"date":"2025-05-20T13:32:18","date_gmt":"2025-05-20T11:32:18","guid":{"rendered":"https:\/\/www.nitinox.com\/?page_id=466"},"modified":"2026-09-16T10:12:29","modified_gmt":"2026-09-16T08:12:29","slug":"aisi-321h-temperature-en-14878-uns-s32109","status":"publish","type":"page","link":"https:\/\/nitinox.com\/en\/materiales\/temperature\/aisi-321h-temperature-en-14878-uns-s32109\/","title":{"rendered":"AISI 321H \/ TEMPERATURE \/ EN 1.4878\/ UNS S32109"},"content":{"rendered":"<h1>AISI 321H \/ AUSTEN\u00cdTICO \/ EN 1.4878 \/ UNS S32109<\/h1>\n<h3>Description<\/h3>\n<p>El AISI 321H es la modificaci\u00f3n de alto contenido en carbono del AISI 321, dise\u00f1ada espec\u00edficamente para proporcionar una mayor resistencia a la fluencia (creep) y tracci\u00f3n a temperaturas elevadas por encima de los 538\u00b0C. Al igual que el grado 321 est\u00e1ndar, est\u00e1 estabilizado con titanio para evitar la precipitaci\u00f3n intergranular de carburos de cromo. Sin embargo, su mayor contenido de carbono (0,04% a 0,10%) otorga una resistencia significativamente superior a la rotura por tensi\u00f3n, lo que lo convierte en el material ideal para aplicaciones estructurales expuestas a servicios t\u00e9rmicos extremos y prolongados hasta aproximadamente los 816\u00b0C.<\/p>\n<h3>Aplicaciones en el Mundo Real<\/h3>\n<ul>\n<li><strong>Procesamiento Petroqu\u00edmico:<\/strong> Oxidadores t\u00e9rmicos, tuber\u00edas de refiner\u00eda y componentes para craqueo catal\u00edtico a alta temperatura.<\/li>\n<li><strong>Plantas Qu\u00edmicas:<\/strong> Recipientes de servicio de \u00e1cido politi\u00f3nico, sistemas de recuperaci\u00f3n de calor residual e intercambiadores de calor.<\/li>\n<li><strong>Generaci\u00f3n de Energ\u00eda:<\/strong> Tubos de sobrecalentadores y recalentadores, elementos de calderas y tuber\u00edas de vapor de alta presi\u00f3n.<\/li>\n<li><strong>Hornos Industriales:<\/strong> Tubos radiantes, equipos de procesamiento t\u00e9rmico y accesorios internos de hornos.<\/li>\n<\/ul>\n<h3>Resumen General<\/h3>\n<table style=\"width:100%\">\n<thead>\n<tr>\n<th>Propiedad<\/th>\n<th>Valor (T\u00edpico)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Densidad<\/td>\n<td>7.92 g\/cm\u00b3<\/td>\n<\/tr>\n<tr>\n<td>Dureza (Brinell)<\/td>\n<td>\u2264 217 HB<\/td>\n<\/tr>\n<tr>\n<td>Magnetismo<\/td>\n<td>No (No magn\u00e9tico en estado recocido)<\/td>\n<\/tr>\n<tr>\n<td>L\u00edmite El\u00e1stico<\/td>\n<td>\u2265 205 MPa (30 ksi)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Est\u00e1ndares Internacionales<\/h3>\n<ul>\n<li><strong>ASTM:<\/strong> A276, A479, A240, A312<\/li>\n<li><strong>ASME:<\/strong> SA276, SA479, SA240, SA312<\/li>\n<li><strong>UNS:<\/strong> S32109<\/li>\n<li><strong>EN:<\/strong> 1.4878<\/li>\n<li><strong>DIN:<\/strong> X12CrNiTi18-9 \/ X6CrNiTi18-10G<\/li>\n<\/ul>\n<h3>Informaci\u00f3n de Procesamiento y Tratamiento T\u00e9rmico<\/h3>\n<ul>\n<li><strong>Forjado:<\/strong> Precalentar a 1150\u00b0C \u2013 1200\u00b0C. No forjar por debajo de 925\u00b0C para mantener una estabilidad estructural uniforme.<\/li>\n<li><strong>Recocido de Soluci\u00f3n:<\/strong> Calentar a 1040\u00b0C \u2013 1120\u00b0C seguido de un enfriamiento r\u00e1pido en agua o aire forzado. Esto asegura la correcta disoluci\u00f3n de los carburos de cromo manteniendo el beneficio del alto carbono.<\/li>\n<li><strong>Tratamiento de Estabilizaci\u00f3n:<\/strong> Se realiza a menudo tras el recocido de soluci\u00f3n calentando a 840\u00b0C \u2013 900\u00b0C para optimizar la resistencia a la corrosi\u00f3n intergranular en entornos de alta temperatura.<\/li>\n<li><strong>Mecanibilidad:<\/strong> Material tenaz y propenso al endurecimiento por deformaci\u00f3n. Utilice equipos de alta resistencia, herramientas de corte afiladas, velocidades bajas y avances constantes para evitar el vitrificado de la superficie.<\/li>\n<li><strong>Soldadura:<\/strong> Se suelda f\u00e1cilmente mediante m\u00e9todos est\u00e1ndar de fusi\u00f3n. Se recomiendan materiales de aporte compatibles con alto contenido de carbono, como ER321H, para preservar la resistencia a la fluencia a altas temperaturas.<\/li>\n<\/ul>\n<h3>Useful links for MATERIAL<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.thyssenkrupp-materials.co.uk\/stainless-steel-321h-14878.html\" target=\"_blank\" rel=\"noopener\">ThyssenKrupp 321H Data Sheet<\/a><\/li>\n<li><a href=\"https:\/\/www.astm.org\" target=\"_blank\" rel=\"noopener\">ASTM International Standards<\/a><\/li>\n<li><a href=\"https:\/\/www.matweb.com\" target=\"_blank\" rel=\"noopener\">MatWeb Material Property Data<\/a><\/li>\n<\/ul>\n<p>You can also find the complete list of similar materials on the main page of <a href=\"\/en\/materials\/temperature\/\">Temperature<\/a>.<\/p>\n<hr>\n<h5><strong>Please, <a href=\"\/en\/contact-us\/\">Contact us<\/a> if you would like more information or a quote.<\/strong><\/h5>","protected":false},"excerpt":{"rendered":"<p>El <strong>AISI 321H<\/strong> es la modificaci\u00f3n de alto contenido en carbono del AISI 321, dise\u00f1ada espec\u00edficamente para proporcionar una mayor resistencia a la fluencia (creep) y tracci\u00f3n a temperaturas elevadas por encima de los <strong>538\u00b0C<\/strong>. Al igual que el grado 321 est\u00e1ndar, est\u00e1 estabilizado con titanio para evitar la precipitaci\u00f3n intergranular de carburos de cromo. <a class=\"more-link\" href=\"https:\/\/nitinox.com\/en\/materiales\/temperature\/aisi-321h-temperature-en-14878-uns-s32109\/\">Read More &#10095;&#10095;<\/a><\/p>","protected":false},"author":1,"featured_media":0,"parent":305,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","pgc_sgb_lightbox_settings":"","footnotes":""},"class_list":["post-466","page","type-page","status-publish","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AISI 321H \/ TEMPERATURE \/ EN 1.4878\/ UNS S32109 - Nitinox<\/title>\n<meta name=\"description\" content=\"Acero resistente a altas temperaturas AISI 321H \/ EN 1.4878 \/ UNS S32109. 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