{"id":1802,"date":"2025-12-11T03:49:13","date_gmt":"2025-12-11T02:49:13","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?p=1802"},"modified":"2026-01-30T03:04:22","modified_gmt":"2026-01-30T02:04:22","slug":"inconel-625-vs-inconel-718","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/es\/inconel-625-vs-inconel-718\/","title":{"rendered":"Inconel 625 vs Inconel 718"},"content":{"rendered":"<p data-path-to-node=\"6\">En el \u00e1mbito de la metalurgia extrema, <b><a href=\"https:\/\/www.nickelcasting.com\/pt\/ligas-de-niquel\/ligas-de-niquel-inconel\/inconel-625\/\">Inconel 625<\/a><\/b> y <b><a href=\"https:\/\/www.nickelcasting.com\/pt\/ligas-de-niquel\/ligas-de-niquel-inconel\/inconel-718\/\">Inconel 718<\/a><\/b> son los est\u00e1ndares industriales de las superaleaciones basadas en n\u00edquel. Aunque comparten una composici\u00f3n b\u00e1sica de n\u00edquel y cromo, sus distintos mecanismos de refuerzo microestructural dictan aplicaciones muy diferentes.<\/p>\n<p data-path-to-node=\"7\">For engineers and metallurgists, the choice between these two grades is rarely about &#8220;better&#8221; or &#8220;worse&#8221;\u2014it is about optimizing for <b>resistencia a la corrosi\u00f3n<\/b> (625) frente a <b>resistencia mec\u00e1nica<\/b> (718). Esta gu\u00eda analiza las diferencias cr\u00edticas en metalurgia, estabilidad t\u00e9rmica y maquinabilidad.<\/p>\n<h2 data-path-to-node=\"8\">Comparaci\u00f3n entre Inconel 625 y 718<\/h2>\n<p data-path-to-node=\"9\">La diferencia fundamental radica en c\u00f3mo consiguen estas aleaciones su resistencia.<\/p>\n<ul data-path-to-node=\"10\">\n<li>\n<p data-path-to-node=\"10,0,0\"><b>Inconel 625 (UNS N06625)<\/b> es principalmente un <b>soluci\u00f3n s\u00f3lida reforzada<\/b> aleaci\u00f3n. Su resistencia se debe al efecto rigidizador del molibdeno (Mo) y el niobio (Nb) en la matriz de n\u00edquel-cromo. No requiere tratamientos t\u00e9rmicos de endurecimiento por envejecimiento para alcanzar sus propiedades, conservando una excelente ductilidad y soldabilidad.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"10,1,0\"><b>Inconel 718 (UNS N07718)<\/b> es un <b>endurecido por precipitaci\u00f3n<\/b> (endurecido por envejecimiento). La adici\u00f3n de titanio (Ti) y aluminio (Al), junto con el niobio, permite la formaci\u00f3n de Gamma Double Prime (<span class=\"math-inline\" data-math=\"\\gamma''\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">\u03b3<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">\u2032\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>) precipita (<span class=\"math-inline\" data-math=\"Ni_3Nb\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">N<\/span><span class=\"mord\"><span class=\"mord mathnormal\">i<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mord mathnormal\">N<\/span><span class=\"mord mathnormal\">b<\/span><\/span><\/span><\/span><\/span>) durante el tratamiento t\u00e9rmico. Esta microestructura proporciona un l\u00edmite el\u00e1stico excepcionalmente alto.<\/p>\n<\/li>\n<\/ul>\n<h3 data-path-to-node=\"11\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-1803\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/45.jpg\" alt=\"\" width=\"1024\" height=\"572\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/45.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/45-300x168.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/45-768x429.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/45-18x10.jpg 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/h3>\n<h3 data-path-to-node=\"11\">Diferencias en la composici\u00f3n qu\u00edmica<\/h3>\n<table data-path-to-node=\"12\">\n<thead>\n<tr>\n<td><strong>Elemento<\/strong><\/td>\n<td><strong>Inconel 625 (Peso %)<\/strong><\/td>\n<td><strong>Inconel 718 (Peso %)<\/strong><\/td>\n<td><strong>Impacto en el rendimiento<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"12,1,0,0\"><b>N\u00edquel (Ni)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,1,1,0\">~58% (Min)<\/span><\/td>\n<td><span data-path-to-node=\"12,1,2,0\">~50 &#8211; 55%<\/span><\/td>\n<td><span data-path-to-node=\"12,1,3,0\">El 625 tiene m\u00e1s Ni para una mejor resistencia a la corrosi\u00f3n.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"12,2,0,0\"><b>Cromo (Cr)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,2,1,0\">20 &#8211; 23%<\/span><\/td>\n<td><span data-path-to-node=\"12,2,2,0\">17 &#8211; 21%<\/span><\/td>\n<td><span data-path-to-node=\"12,2,3,0\">Ambos ofrecen una excelente resistencia a la oxidaci\u00f3n.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"12,3,0,0\"><b>Molibdeno (Mo)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,3,1,0\"><b>8 &#8211; 10%<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,3,2,0\">2.8 &#8211; 3.3%<\/span><\/td>\n<td><span data-path-to-node=\"12,3,3,0\"><b>Diferencia clave:<\/b> El alto contenido en Mo del 625 le confiere una resistencia superior a las picaduras.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"12,4,0,0\"><b>Niobio (Nb)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,4,1,0\">3.15 &#8211; 4.15%<\/span><\/td>\n<td><span data-path-to-node=\"12,4,2,0\"><b>4.75 &#8211; 5.5%<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,4,3,0\">Un mayor contenido de Nb en el 718 impulsa la respuesta de endurecimiento por precipitaci\u00f3n.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"12,5,0,0\"><b>Titanio\/Aluminio<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,5,1,0\">&lt; 0,4%<\/span><\/td>\n<td><span data-path-to-node=\"12,5,2,0\"><b>Ti: 0,65-1,15% \/ Al: 0,2-0,8%<\/b><\/span><\/td>\n<td><span data-path-to-node=\"12,5,3,0\">Essential for 718&#8217;s age-hardening process.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Propiedades mec\u00e1nicas (temperatura ambiente t\u00edpica)<\/h3>\n<table data-path-to-node=\"14\">\n<thead>\n<tr>\n<td><strong>Propiedad<\/strong><\/td>\n<td><strong>Inconel 625 (Recocido)<\/strong><\/td>\n<td><strong>Inconel 718 (Soluci\u00f3n + Envejecido)<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"14,1,0,0\"><b>L\u00edmite el\u00e1stico (0.2% Offset)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"14,1,1,0\">414 &#8211; 650 MPa<\/span><\/td>\n<td><span data-path-to-node=\"14,1,2,0\"><b>1034 &#8211; 1100 MPa<\/b><\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"14,2,0,0\"><b>Resistencia a la tracci\u00f3n<\/b><\/span><\/td>\n<td><span data-path-to-node=\"14,2,1,0\">827 &#8211; 1000 MPa<\/span><\/td>\n<td><span data-path-to-node=\"14,2,2,0\"><b>1240 &#8211; 1350 MPa<\/b><\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"14,3,0,0\"><b>Dureza (Rockwell)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"14,3,1,0\">145 &#8211; 220 HB<\/span><\/td>\n<td><span data-path-to-node=\"14,3,2,0\">331 &#8211; 444 HB (36-44 HRC)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"14,4,0,0\"><b>Alargamiento<\/b><\/span><\/td>\n<td><span data-path-to-node=\"14,4,1,0\">30 &#8211; 60% (High Ductility)<\/span><\/td>\n<td><span data-path-to-node=\"14,4,2,0\">12 &#8211; 21%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-path-to-node=\"15\"><b>Veredicto:<\/b> Si su aplicaci\u00f3n exige rigidez estructural bajo cargas extremas, el Inconel 718 proporciona casi el doble de l\u00edmite el\u00e1stico que el 625.<\/p>\n<h2 data-path-to-node=\"16\">Inconel 625 vs 718 Rendimiento a alta temperatura<\/h2>\n<p data-path-to-node=\"17\">Defining &#8220;high temperature&#8221; is critical when choosing between these alloys, as their performance curves diverge significantly past <b>650\u00b0C (1200\u00b0F)<\/b>.<\/p>\n<h3 data-path-to-node=\"18\">1. Ruptura por fluencia y estabilidad de la resistencia<\/h3>\n<p data-path-to-node=\"19\">Inconel 718 es la opci\u00f3n dominante para aplicaciones de alta tensi\u00f3n hasta <b>700\u00b0C (1300\u00b0F)<\/b>. Dentro de esta gama, el <span class=\"math-inline\" data-math=\"\\gamma''\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">\u03b3<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">\u2032\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> bloquean eficazmente el movimiento de dislocaci\u00f3n, impidiendo la fluencia. Sin embargo, por encima de 700 \u00b0C, estos precipitados se vuelven inestables y se engrosan, provocando una r\u00e1pida ca\u00edda de la resistencia mec\u00e1nica.<\/p>\n<h3 data-path-to-node=\"20\">2. Estabilidad t\u00e9rmica y a la oxidaci\u00f3n<\/h3>\n<p data-path-to-node=\"21\">Inconel 625 presenta una estabilidad superior a temperaturas ultraelevadas (hasta <b>982\u00b0C \/ 1800\u00b0F<\/b>). Como se basa en el refuerzo de la soluci\u00f3n s\u00f3lida en lugar de los precipitados, no sufre los mismos problemas de engrosamiento que el 718. El 625 es la opci\u00f3n m\u00e1s segura para los componentes sin carga o sometidos a poca tensi\u00f3n y expuestos a un calor extremo (como los conductos de escape o las chimeneas).<\/p>\n<h3 data-path-to-node=\"22\">3. Rendimiento criog\u00e9nico<\/h3>\n<p data-path-to-node=\"23\">Ambas aleaciones son excelentes para la criogenia, pero a menudo se prefiere Inconel 718 para tornillos criog\u00e9nicos y <a href=\"https:\/\/www.nickelcasting.com\/pt\/product-forms\/fasteners\/\">fijaciones<\/a> porque conserva su alta resistencia a la tracci\u00f3n sin volverse quebradizo a temperaturas cercanas al cero absoluto.<\/p>\n<h2 data-path-to-node=\"24\">Inconel 625 vs 718 C\u00f3mo elegir<\/h2>\n<p data-path-to-node=\"25\">Para racionalizar la decisi\u00f3n de compra, eval\u00fae las tres restricciones siguientes:<\/p>\n<p data-path-to-node=\"25\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-1804\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/46.jpg\" alt=\"\" width=\"1024\" height=\"572\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/46.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/46-300x168.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/46-768x429.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/46-18x10.jpg 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3 data-path-to-node=\"26\">Escenario A: Corrosi\u00f3n extrema (marina y qu\u00edmica)<\/h3>\n<p data-path-to-node=\"27\"><b>Elija Inconel 625.<\/b> El alto contenido de molibdeno (9%) confiere al 625 un n\u00famero equivalente de resistencia a la picadura (PREN) significativamente superior al del 718. Es pr\u00e1cticamente inmune al agrietamiento por corrosi\u00f3n bajo tensi\u00f3n por iones cloruro.<\/p>\n<ul data-path-to-node=\"28\">\n<li>\n<p data-path-to-node=\"28,0,0\"><i>Aplicaciones t\u00edpicas:<\/i> Tuber\u00edas submarinas, intercambiadores de calor en el tratamiento de \u00e1cidos, sistemas de escape navales.<\/p>\n<\/li>\n<\/ul>\n<h3 data-path-to-node=\"29\">Escenario B: Cargas est\u00e1ticas y c\u00edclicas elevadas (aeroespacial y energ\u00eda)<\/h3>\n<p data-path-to-node=\"30\"><b>Elija Inconel 718.<\/b> Cuando una pieza debe soportar altas revoluciones o presi\u00f3n sin deformarse, el l\u00edmite el\u00e1stico del 718 no es negociable.<\/p>\n<ul data-path-to-node=\"31\">\n<li>\n<p data-path-to-node=\"31,0,0\"><i>Aplicaciones t\u00edpicas:<\/i> \u00c1labes de turbinas de gas, rotores de turbocompresores, v\u00e1lvulas de alta presi\u00f3n, c\u00e1maras de empuje de motores de cohetes.<\/p>\n<\/li>\n<\/ul>\n<h3 data-path-to-node=\"32\">Escenario C: Fabricaci\u00f3n y soldabilidad<\/h3>\n<p data-path-to-node=\"33\"><b>Elija Inconel 625.<\/b> Inconel 718 is susceptible to &#8220;strain-age cracking&#8221; during post-weld heat treatment if not handled precisely. In contrast, Inconel 625 is one of the most weldable superalloys available; it is resistant to intergranular cracking and requires no post-weld aging to restore corrosion resistance.<\/p>\n<h2 data-path-to-node=\"35\">Preguntas y respuestas relacionadas<\/h2>\n<p data-path-to-node=\"36\"><b>1. \u00bfQu\u00e9 aleaci\u00f3n es m\u00e1s dif\u00edcil de mecanizar, Inconel 625 o 718?<\/b> El Inconel 718 es generalmente m\u00e1s dif\u00edcil de mecanizar. Debido a su capacidad de endurecimiento por precipitaci\u00f3n, se endurece r\u00e1pidamente durante el corte, lo que provoca mayores fuerzas de corte y una menor vida \u00fatil de la herramienta en comparaci\u00f3n con el Inconel 625 recocido.<\/p>\n<p data-path-to-node=\"37\"><b>2. \u00bfPuede utilizarse Inconel 625 como metal de aportaci\u00f3n para soldar Inconel 718?<\/b> S\u00ed, el metal de aportaci\u00f3n Inconel 625 (ERNiCrMo-3) se utiliza con frecuencia para soldar componentes de Inconel 718, especialmente cuando la soldadura requiere una alta ductilidad y resistencia a la corrosi\u00f3n para evitar el agrietamiento en la zona afectada por el calor (HAZ).<\/p>\n<p data-path-to-node=\"38\"><b>3. \u00bfEs magn\u00e9tico el Inconel 718?<\/b> No, tanto el Inconel 625 como el 718 son no magn\u00e9ticos. Sin embargo, el trabajo en fr\u00edo intenso o los tratamientos t\u00e9rmicos espec\u00edficos pueden inducir a veces una permeabilidad magn\u00e9tica muy ligera, pero para la mayor\u00eda de los fines de ingenier\u00eda, se consideran no magn\u00e9ticos.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the realm of extreme metallurgy, Inconel 625 and Inconel 718 stand as the industry standards for nickel-based superalloys. While they share a base composition of nickel and chromium, their distinct microstructural strengthening mechanisms dictate vastly different applications. For engineers and metallurgists, the choice between these two grades is rarely about &#8220;better&#8221; or &#8220;worse&#8221;\u2014it is [&hellip;]<\/p>","protected":false},"author":1,"featured_media":1803,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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superalloys."],"_yoast_wpseo_linkdex":["73"],"_yoast_wpseo_content_score":["90"],"_yoast_wpseo_estimated-reading-time-minutes":["5"],"rank_math_primary_category":["3"],"rank_math_description":["In the realm of extreme metallurgy, Inconel 625 and Inconel 718 stand as the industry standards for nickel-based superalloys."],"rank_math_focus_keyword":["Inconel 625 vs Inconel 718"],"rank_math_news_sitemap_robots":["index"],"rank_math_robots":["a:1:{i:0;s:5:\"index\";}"],"rank_math_seo_score":["59"],"rank_math_internal_links_processed":["1"],"ilj_blacklistdefinition":["a:0:{}"],"ilj_linkdefinition":["a:1:{i:0;s:26:\"Inconel 625 vs Inconel 718\";}"],"astra-migrate-meta-layouts":["set"],"_uag_page_assets":["a:9:{s:3:\"css\";s:263:\".uag-blocks-common-selector{z-index:var(--z-index-desktop) !important}@media (max-width: 976px){.uag-blocks-common-selector{z-index:var(--z-index-tablet) !important}}@media (max-width: 767px){.uag-blocks-common-selector{z-index:var(--z-index-mobile) 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the realm of extreme metallurgy, Inconel 625 and Inconel 718 stand as the industry standards for nickel-based superalloys. 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