{"id":6274,"date":"2026-09-19T12:36:40","date_gmt":"2026-09-19T12:36:40","guid":{"rendered":"https:\/\/beiyutitanium.com\/titanium-hardness-by-grade\/"},"modified":"2026-09-19T12:36:40","modified_gmt":"2026-09-19T12:36:40","slug":"titanium-hardness-by-grade","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/es\/titanium-hardness-by-grade\/","title":{"rendered":"Dureza del titanio por calidad: valores Rockwell, Brinell y Vickers"},"content":{"rendered":"<p>La dureza del titanio depende de la calidad. Las calidades no aleadas se sit\u00faan en la escala Rockwell B, desde 70 HRB para Grade 1 hasta 100 HRB para Grade 4, mientras que las aleaciones Grade 9, Grade 5 y Grade 23 pasan a la escala Rockwell C, con Grade 5 en un nominal de 33 HRC en el RMI Titanium Company <em>Gu\u00eda de aleaciones de titanio<\/em>. Son valores t\u00edpicos, no l\u00edmites: ni ASTM B265 ni ASTM B348 fijan un requisito de dureza, de modo que una cifra de dureza solo pasa a ser un valor verificado cuando el pedido lo solicita.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-bar-diameter-measurement-1024x683.jpg\" alt=\"Digital micrometer reading titanium bar diameter on a granite surface plate\" width=\"1024\" height=\"683\" \/><figcaption>Micr\u00f3metro digital midiendo el di\u00e1metro de una barra de titanio sobre un m\u00e1rmol de granito<\/figcaption><\/figure>\n<h2>Dureza del titanio por calidad<\/h2>\n<p>Los valores nominales que siguen proceden de las fichas t\u00e9cnicas por calidad de una sola publicaci\u00f3n, la RMI <em>Gu\u00eda de aleaciones de titanio<\/em> (enero de 2000), de modo que todas las filas se apoyan en la misma base. Cuando una ficha t\u00e9cnica de Beiyu Titanium da su propia cifra t\u00edpica para la misma calidad, se muestra en la \u00faltima columna en lugar de fusionarse, porque son valores t\u00edpicos de dos publicaciones y, para Grade 2, en escalas distintas.<\/p>\n<table>\n<tr>\n<th>Calidad<\/th>\n<th>UNS<\/th>\n<th>Dureza nominal RMI<\/th>\n<th>Valor t\u00edpico de la ficha t\u00e9cnica de Beiyu<\/th>\n<\/tr>\n<tr>\n<td>Grade 1<\/td>\n<td>R50250<\/td>\n<td>70 HRB<\/td>\n<td>No publicado<\/td>\n<\/tr>\n<tr>\n<td>Grade 2<\/td>\n<td>R50400<\/td>\n<td>82 HRB<\/td>\n<td>Near 150 HB, or 160 to 200 HV<\/td>\n<\/tr>\n<tr>\n<td>Grade 3<\/td>\n<td>R50550<\/td>\n<td>90 HRB<\/td>\n<td>No publicado<\/td>\n<\/tr>\n<tr>\n<td>Grade 4<\/td>\n<td>R50700<\/td>\n<td>100 HRB<\/td>\n<td>No publicado<\/td>\n<\/tr>\n<tr>\n<td>Grade 7<\/td>\n<td>R52400<\/td>\n<td>82 HRB<\/td>\n<td>No publicado<\/td>\n<\/tr>\n<tr>\n<td>Grade 12<\/td>\n<td>R53400<\/td>\n<td>88 HRB<\/td>\n<td>No publicado<\/td>\n<\/tr>\n<tr>\n<td>Grade 9<\/td>\n<td>R56320<\/td>\n<td>25 HRC<\/td>\n<td>No publicado<\/td>\n<\/tr>\n<tr>\n<td>Grade 23<\/td>\n<td>R56407<\/td>\n<td>32 HRC<\/td>\n<td>No publicado<\/td>\n<\/tr>\n<tr>\n<td>Grade 5<\/td>\n<td>R56400<\/td>\n<td>33 HRC<\/td>\n<td>De 30 a 36 HRC en estado recocido, unos 330 HV o 334 HB; aproximadamente de 35 a 39 HRC tras tratamiento en soluci\u00f3n y envejecimiento<\/td>\n<\/tr>\n<\/table>\n<p>Los n\u00fameros UNS se dan a t\u00edtulo de correspondencia; la propia ASTM B348 identifica el material solo por su n\u00famero de calidad. Grade 23 figura como R56407, y R56401 es el n\u00famero que ASTM F136 asigna a la forma implantable de la misma aleaci\u00f3n. La fila de Grade 5 es donde ambas fuentes pueden leerse una frente a otra en una misma escala: los 33 HRC nominales de RMI caen dentro del intervalo recocido de 30 a 36 HRC de la <a href=\"https:\/\/beiyutitanium.com\/es\/grade-5-titanium-ti-6al-4v-uns-r56400\/\">ficha t\u00e9cnica de Grade 5<\/a>.<\/p>\n<h2>Dureza y l\u00edmite de ox\u00edgeno en las calidades no aleadas<\/h2>\n<p>Las cuatro calidades no aleadas no son cuatro purezas de un mismo metal en sentido laxo. Se separan por sus l\u00edmites de ox\u00edgeno, nitr\u00f3geno y hierro, y los valores de dureza de RMI aumentan en el mismo orden que el l\u00edmite de ox\u00edgeno.<\/p>\n<table>\n<tr>\n<th>Calidad<\/th>\n<th>Ox\u00edgeno, m\u00e1x. (% en masa)<\/th>\n<th>Nitr\u00f3geno, m\u00e1x. (% en masa)<\/th>\n<th>Hierro, m\u00e1x. (% en masa)<\/th>\n<th>Dureza nominal RMI<\/th>\n<\/tr>\n<tr>\n<td>Grade 1<\/td>\n<td>0.18<\/td>\n<td>0.03<\/td>\n<td>0.20<\/td>\n<td>70 HRB<\/td>\n<\/tr>\n<tr>\n<td>Grade 2<\/td>\n<td>0.25<\/td>\n<td>0.03<\/td>\n<td>0.30<\/td>\n<td>82 HRB<\/td>\n<\/tr>\n<tr>\n<td>Grade 3<\/td>\n<td>0.35<\/td>\n<td>0.05<\/td>\n<td>0.30<\/td>\n<td>90 HRB<\/td>\n<\/tr>\n<tr>\n<td>Grade 4<\/td>\n<td>0.40<\/td>\n<td>0.05<\/td>\n<td>0.50<\/td>\n<td>100 HRB<\/td>\n<\/tr>\n<\/table>\n<p>Para un comprador, la lectura pr\u00e1ctica es que elegir entre Grade 1 y Grade 4 es tambi\u00e9n elegir entre la m\u00e1s blanda y la m\u00e1s dura de la familia no aleada.<\/p>\n<h2>Leer HRB, HRC, HB y HV en paralelo<\/h2>\n<p>Un valor en la escala Rockwell B y otro en la escala Rockwell C, Brinell o Vickers no son el mismo n\u00famero en unidades distintas. En la gu\u00eda RMI las calidades no aleadas, Grade 7 y Grade 12 se indican en Rockwell B, y las aleaciones Grade 9, Grade 5 y Grade 23 en Rockwell C, que es donde la tabla anterior cambia de escala. La conversi\u00f3n entre escalas requiere una base de conversi\u00f3n acordada para el material; por tanto, un l\u00edmite en un plano deber\u00eda indicar la escala en la que est\u00e1 escrito, y el ensayo deber\u00eda realizarse en esa escala.<\/p>\n<table>\n<tr>\n<th>Scale<\/th>\n<th>D\u00f3nde aparece en las fuentes por calidad utilizadas aqu\u00ed<\/th>\n<\/tr>\n<tr>\n<td>HRB (Rockwell B)<\/td>\n<td>Calidades no aleadas y Grade 7 y Grade 12 en la gu\u00eda RMI<\/td>\n<\/tr>\n<tr>\n<td>HRC (Rockwell C)<\/td>\n<td>Grade 5, Grade 9 y Grade 23 en la gu\u00eda RMI; Grade 5 en la ficha t\u00e9cnica de Beiyu<\/td>\n<\/tr>\n<tr>\n<td>HB (Brinell)<\/td>\n<td>Fichas t\u00e9cnicas de Beiyu para Grade 2 y Grade 5<\/td>\n<\/tr>\n<tr>\n<td>HV (Vickers)<\/td>\n<td>Fichas t\u00e9cnicas de Beiyu para Grade 2 y Grade 5<\/td>\n<\/tr>\n<\/table>\n<p>La dureza Mohs, la escala de rayado utilizada para minerales, no aparece para ninguna calidad en ninguna de las dos fuentes.<\/p>\n<h2>\u00bfEl estado modifica la dureza del titanio?<\/h2>\n<p>S\u00ed, en las aleaciones tratables t\u00e9rmicamente. La ficha t\u00e9cnica de Grade 5 indica de 30 a 36 HRC en estado recocido y aproximadamente de 35 a 39 HRC tras el tratamiento en soluci\u00f3n y el envejecimiento, de modo que la misma aleaci\u00f3n puede llegar en dos franjas de dureza distintas seg\u00fan el estado indicado en el pedido. El valor de RMI para Grade 5 es una cifra nominal sin intervalo por estado. Para las calidades no aleadas, el recocido es el estado de suministro normal y los valores de la tabla son los que cabe esperar.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-precision-ground-bar-batch-1024x683.webp\" alt=\"Batch of precision ground titanium round bar laid out for inspection\" width=\"1024\" height=\"683\" \/><figcaption>Lote de barras redondas de titanio rectificadas de precisi\u00f3n, dispuestas para inspecci\u00f3n<\/figcaption><\/figure>\n<h2>Fijar un l\u00edmite de dureza en un pedido de titanio<\/h2>\n<p>Como ASTM B265 y B348 no incluyen una columna de dureza, un certificado emitido \u00fanicamente conforme a esas especificaciones no est\u00e1 obligado a indicar la dureza, y el material no puede rechazarse por dureza frente a ellas. La parte documental de esto se expone en <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-vs-stainless-steel\/\">titanio frente a acero inoxidable<\/a>. Cuando la pieza s\u00ed necesita un l\u00edmite de dureza, el pedido debe recogerlo como requisito adicional.<\/p>\n<table>\n<tr>\n<th>L\u00ednea del pedido<\/th>\n<th>Qu\u00e9 indicar<\/th>\n<\/tr>\n<tr>\n<td>Calidad y condici\u00f3n<\/td>\n<td>Por ejemplo Grade 5, recocido, o Grade 5, tratado en soluci\u00f3n y envejecido<\/td>\n<\/tr>\n<tr>\n<td>Scale<\/td>\n<td>La escala que utiliza el plano (HRB, HRC, HB o HV), indicada expl\u00edcitamente<\/td>\n<\/tr>\n<tr>\n<td>Limit<\/td>\n<td>M\u00ednimo, m\u00e1ximo o intervalo en esa escala<\/td>\n<\/tr>\n<tr>\n<td>M\u00e9todo de ensayo y comunicaci\u00f3n de resultados<\/td>\n<td>El m\u00e9todo de ensayo, y que el resultado se indique en el certificado<\/td>\n<\/tr>\n<\/table>\n<p>Para la barra, la <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-bar-rfq-checklist\/\">lista de comprobaci\u00f3n para solicitud de oferta de barra de titanio<\/a> expone las dem\u00e1s l\u00edneas que necesita la consulta, y el material se suministra como <a href=\"https:\/\/beiyutitanium.com\/es\/product\/grade-2-titanium-bar\/\">Barra de titanio Grade 2<\/a> o <a href=\"https:\/\/beiyutitanium.com\/es\/product\/6al4v-titanium-plate\/\">chapa gruesa Ti-6Al-4V<\/a> entre otras formas.<\/p>\n<h2>Preguntas frecuentes<\/h2>\n<p><strong>\u00bfCu\u00e1l es la calidad de titanio m\u00e1s dura?<\/strong> En los valores de RMI para las calidades anteriores, Grade 5 con un nominal de 33 HRC, y Grade 23 con 32 HRC; entre las calidades no aleadas, Grade 4 con 100 HRB.<\/p>\n<p><strong>\u00bfEs el titanio m\u00e1s duro que el acero?<\/strong> Depende del acero; la comparaci\u00f3n, incluido por qu\u00e9 el desgaste es una cuesti\u00f3n de superficie y no un valor de dureza del material base, se encuentra en <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-vs-stainless-steel\/\">titanio frente a acero inoxidable<\/a>.<\/p>\n<p><strong>\u00bfCu\u00e1l es la dureza del titanio Grade 2?<\/strong> Un valor nominal de 82 HRB en la gu\u00eda RMI; la <a href=\"https:\/\/beiyutitanium.com\/es\/grade-2-titanium-cp-uns-r50400\/\">ficha t\u00e9cnica de Grade 2<\/a> da valores t\u00edpicos cercanos a 150 HB, o de 160 a 200 HV.<\/p>\n<p><strong>\u00bfEs magn\u00e9tico el titanio?<\/strong> La respuesta, con los valores de permeabilidad por calidad, se encuentra en <a href=\"https:\/\/beiyutitanium.com\/es\/is-titanium-magnetic\/\">si el titanio es magn\u00e9tico<\/a>.<\/p>\n<p><strong>\u00bfEs pesado el titanio?<\/strong> La densidad por calidad y el peso por metro seg\u00fan la dimensi\u00f3n de barra se encuentran en <a href=\"https:\/\/beiyutitanium.com\/es\/is-titanium-heavy\/\">\u00bfes pesado el titanio?<\/a>.<\/p>\n<p><strong>\u00bfAparece la dureza en un certificado de materiales de titanio?<\/strong> ASTM B265 y B348 no la exigen, por lo que solo aparece cuando el pedido la a\u00f1ade, como en el apartado de pedido anterior.<\/p>\n<h2>Detalles de especificaci\u00f3n con fuentes<\/h2>\n<p>Los valores nominales de dureza proceden de RMI Titanium Company <em>Gu\u00eda de aleaciones de titanio<\/em> (enero de 2000), que da una cifra nominal por calidad en sus fichas t\u00e9cnicas: 70 HRB para Grade 1, 82 HRB para Grade 2, 90 HRB para Grade 3, 100 HRB para Grade 4, 82 HRB para Grade 7, 88 HRB para Grade 12, 25 HRC para Grade 9, 32 HRC para Grade 23 y 33 HRC para Grade 5. Los m\u00e1ximos de ox\u00edgeno, nitr\u00f3geno y hierro de la tabla de calidades no aleadas proceden de las l\u00edneas de composici\u00f3n qu\u00edmica de la misma gu\u00eda para esas calidades. Las cifras de Beiyu son los valores t\u00edpicos que constan en las fichas t\u00e9cnicas de Beiyu Titanium de Grade 2 y Grade 5, y se muestran junto a las de RMI en lugar de conciliarse, porque son valores t\u00edpicos de dos publicaciones y, para Grade 2, en escalas distintas. Ninguno de ellos es un l\u00edmite de especificaci\u00f3n: ASTM B265 y ASTM B348 fijan requisitos qu\u00edmicos, mec\u00e1nicos y dimensionales y no contienen ning\u00fan requisito de dureza, por lo que la dureza solo se verifica cuando el pedido la a\u00f1ade.<\/p>\n<h2>Qu\u00e9 incluir en la consulta<\/h2>\n<p>Indique la calidad, el estado y, si el plano lo tiene, el l\u00edmite de dureza con su escala; con eso, el ensayo de dureza se oferta junto con el material en lugar de plantearse en la inspecci\u00f3n. Beiyu Titanium suministra titanio en Grade 1, 2, 5, 7, 9, 12 y 23 en barra, chapa gruesa, chapa fina, tubo y piezas forjadas seg\u00fan especificaciones ASTM y AMS, con certificado de materiales EN 10204 3.1 seg\u00fan el alcance del pedido.<\/p>","protected":false},"excerpt":{"rendered":"<p>Titanium hardness depends on the grade. The unalloyed grades sit on the Rockwell B scale, from 70 HRB for Grade 1 to 100 HRB for Grade 4, while the alloys Grade 9, Grade 5 and Grade 23 move to the Rockwell C scale, with Grade 5 at a nominal 33 HRC in the RMI Titanium [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6274","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Titanium Hardness by Grade | HRB, HRC, HB and HV | Beiyu<\/title>\n<meta name=\"description\" content=\"Titanium hardness by grade: 70 HRB for Grade 1 to 33 HRC for Grade 5, with sources, what each scale means, and why ASTM B265 and B348 set no hardness limit.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/beiyutitanium.com\/es\/titanium-hardness-by-grade\/\" \/>\n<meta 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Esas son las mismas cuatro cosas que un comprador de la industria de procesos o regulada exigir\u00e1 a un proveedor de titanio, y haber tenido que aplicarlas como cliente es la raz\u00f3n por la que aqu\u00ed se tratan como parte del suministro y no como documentaci\u00f3n elaborada posteriormente. Su trabajo diario abarca las cuestiones que este sitio est\u00e1 concebido para responder: elegir entre calidades de titanio comercialmente puro y aleado para un servicio corrosivo, interpretar un certificado de materiales frente a la norma solicitada y relacionar la designaci\u00f3n de un comprador (calidad ASTM, UNS, n\u00famero Werkstoff alem\u00e1n o c\u00f3digo NF franc\u00e9s) con el mismo metal en distintos mercados. 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