{"id":20214,"date":"2026-09-29T05:15:22","date_gmt":"2026-09-28T21:15:22","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=20214"},"modified":"2026-10-16T00:17:01","modified_gmt":"2026-10-15T16:17:01","slug":"m2-steel-specifications","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/m2-steel-specifications\/","title":{"rendered":"Especificaciones del acero r\u00e1pido M2 por norma"},"content":{"rendered":"

Especificaciones del acero r\u00e1pido M2 por norma<\/h1>\n\n\n\n

Lo que permiten las especificaciones estadounidense, brit\u00e1nica y alemana para el acero r\u00e1pido M2, con ambos extremos de los rangos brit\u00e1nico y alem\u00e1n impresos y el balance de carbono del grado calculado en la misma p\u00e1gina. Un resumen de referencia de la pr\u00e1ctica publicada y no una especificaci\u00f3n de Aobo Steel.<\/p>\n\n\n\n

Tres especificaciones, un grado<\/h2>\n\n\n\n

El M2 llega al comprador bajo varios nombres. La designaci\u00f3n estadounidense es M2, la alemana e internacional es 1.3343 o HS 6-5-2, la japonesa es SKH51, la brit\u00e1nica es BM2 y la china es W6Mo5Cr4V2, y el comercio los trata como un solo grado. Las composiciones que permiten las especificaciones detr\u00e1s de esos nombres no son las mismas. El documento estadounidense imprime valores puntuales para cada elemento, mientras que BS 4659 y DIN 17 350 imprimen rangos, y la fuente registra la opini\u00f3n de que la latitud en esos rangos es lo suficientemente amplia como para importar, porque una colada en el l\u00edmite superior de los formadores de carburos con el l\u00edmite inferior del rango de carbono es un acero diferente de una colada en la esquina opuesta.<\/p>\n\n\n\n

La tabla siguiente imprime ambas esquinas de las especificaciones brit\u00e1nica y alemana tal como las establece la fuente. La l\u00ednea A es el l\u00edmite superior de los formadores de carburos con el l\u00edmite inferior del rango de carbono, y la l\u00ednea B es lo inverso. Leer las dos l\u00edneas una contra otra muestra cu\u00e1nto margen deja una sola especificaci\u00f3n dentro de un nombre de grado.<\/p>\n\n\n\n

Aceros tipo M2 por especificaci\u00f3n<\/h2>\n\n\n\n

Composici\u00f3n seg\u00fan lo que permite cada especificaci\u00f3n, por ciento<\/h3>\n\n\n\n
Especificaci\u00f3n<\/th>V<\/th>W<\/th>Mo<\/th>Cr<\/th>C<\/th>Variaci\u00f3n del SCE respecto al valor ideal<\/th><\/tr><\/thead>
M2<\/td>2<\/td>6<\/td>5<\/td>4<\/td>0.85<\/td>-0.26<\/td><\/tr>
M2 (alto carbono)<\/td>2<\/td>6<\/td>5<\/td>4<\/td>1.105<\/td>0 (equilibrado)<\/td><\/tr>
BM2 (A)<\/td>2.05<\/td>6.75<\/td>5.5<\/td>4.5<\/td>0.8<\/td>-0.4<\/td><\/tr>
BM2 (B)<\/td>1.75<\/td>6.0<\/td>4.75<\/td>3.75<\/td>0.9<\/td>-0.13<\/td><\/tr>
S 6-5-2 (A)<\/td>2.0<\/td>6.7<\/td>5.2<\/td>4.5<\/td>0.86<\/td>-0.16<\/td><\/tr>
S 6-5-2 (B)<\/td>1.7<\/td>6.0<\/td>4.7<\/td>3.8<\/td>0.94<\/td>-0.08<\/td><\/tr>
SC 6-5-2 (A)<\/td>2.0<\/td>6.7<\/td>5.2<\/td>4.5<\/td>0.95<\/td>-0.07<\/td><\/tr>
SC 6-5-2 (B)<\/td>1.7<\/td>6.0<\/td>4.7<\/td>3.8<\/td>1.05<\/td>+0.03<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fuente, comparaci\u00f3n de composici\u00f3n para aceros r\u00e1pidos tipo M2, p\u00e1gina impresa 97.<\/em><\/p>\n\n\n\n

Todos los valores son porcentaje en peso, y la \u00faltima columna se expresa en puntos porcentuales de carbono. La tabla imprime dos l\u00edneas para cada especificaci\u00f3n brit\u00e1nica y alemana, y la fuente las explica en la misma p\u00e1gina. La l\u00ednea A da el l\u00edmite superior para los formadores de carburos y el l\u00edmite inferior para el carbono, la l\u00ednea B da el l\u00edmite inferior para los formadores de carburos y el l\u00edmite superior para el carbono. El M2 proviene del AISI Production Manual, Tool Steels, 1981, el BM2 de BS 4659, y el S 6-5-2 y el SC 6-5-2 de DIN 17 350. Los datos de composici\u00f3n son solo para referencia general, los valores reales var\u00edan seg\u00fan la norma, la acer\u00eda y el n\u00famero de colada, as\u00ed que confirme las cifras contra el certificado de ensayo del material de la colada o consulte con Aobo Steel.<\/em><\/p>\n\n\n\n

El balance de carbono del grado<\/h2>\n\n\n\n

Carbono que captan los formadores de carburos, por 1 por ciento de cada elemento<\/h3>\n\n\n\n
Elemento formador de carburos<\/th>Carbono por 1 por ciento del elemento<\/th><\/tr><\/thead>
Tungsteno<\/td>0.033<\/td><\/tr>
Molibdeno<\/td>0.063<\/td><\/tr>
Vanadio<\/td>0.176<\/td><\/tr>
Cromo<\/td>0.060<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fuente, comparaci\u00f3n de composici\u00f3n para aceros r\u00e1pidos tipo M2, p\u00e1gina impresa 97.<\/em><\/p>\n\n\n\n

La misma nota imprime los cuatro factores usados para calcular cu\u00e1nto carbono captar\u00e1n los formadores de carburos en un acero r\u00e1pido. El total para un acero dado es su equivalente de carbono estequiom\u00e9trico, y la \u00faltima columna de la tabla anterior es ese total menos el carbono que la propia especificaci\u00f3n permite, de modo que una cifra negativa es un acero que la especificaci\u00f3n permite que quede corto del carbono que sus propios formadores de carburos exigen.<\/em><\/p>\n\n\n\n

Las cifras que la fuente imprime para el propio M2 demuestran el punto. Partiendo de la composici\u00f3n de la matriz de una muestra templada, el equivalente de carbono estequiom\u00e9trico total de los formadores de carburos es 1,13, mientras que la especificaci\u00f3n del M2 permite 0,85 por ciento de carbono, una deficiencia de 0,28 por ciento. El mismo razonamiento aplicado a los l\u00edmites de la especificaci\u00f3n BM2 da una deficiencia de 0,4 por ciento de carbono en el caso m\u00e1s adverso y de 0,12 por ciento en el mejor caso. La \u00faltima columna de la tabla de composici\u00f3n anterior es la misma medida calculada sobre las l\u00edneas impresas en esa tabla, por lo que indica -0,26 para el M2 en lugar de -0,28. Las dos cifras provienen de la misma p\u00e1gina y difieren solo en qu\u00e9 composici\u00f3n entr\u00f3 en la suma.<\/p>\n\n\n\n

Lo que provoca una deficiencia de carbono se expone en la misma p\u00e1gina. El endurecimiento err\u00e1tico es el resultado reportado, junto con la variaci\u00f3n local en la composici\u00f3n dentro de la estructura, y una muestra mal segregada puede contener zonas de grave escasez de carbono junto a zonas con exceso de carbono, lo que la licuaci\u00f3n en el endurecimiento luego penaliza. La l\u00ednea equilibrada en la tabla es la versi\u00f3n de alto carbono del M2 con 1,105 por ciento de carbono, y la fuente registra lo que cuesta esa versi\u00f3n. Este retiene m\u00e1s austenita<\/a> despu\u00e9s del temple, por lo que a menudo se recomienda un triple revenido, y tras m\u00faltiples revenidos termina uno o dos puntos HRC m\u00e1s duro que el producto convencional. Tambi\u00e9n engrosa el grano m\u00e1s f\u00e1cilmente que el acero de menor carbono en el extremo superior del rango de austenizaci\u00f3n, que es donde importa el contenido de vanadio del grado, ya que el carburo que forma el vanadio es lo que mantiene el l\u00edmite de grano en su lugar.<\/p>\n\n\n\n

Los rangos p\u00fablicos no son con los que trabaja la mayor parte del comercio. La fuente afirma que la mayor\u00eda de los fabricantes adoptan normas internas con l\u00edmites mucho m\u00e1s estrechos que los que permiten las especificaciones, lo cual es una raz\u00f3n por la que dos coladas del mismo grado nominal de dos acer\u00edas pueden comportarse de manera diferente en el mismo horno.<\/p>\n\n\n\n

Qu\u00e9 verificar en un certificado<\/h2>\n\n\n\n

La lectura pr\u00e1ctica de todo esto es que un nombre de grado fija menos de lo que parece. Vale la pena pedir tres cosas en un pedido de M2. El an\u00e1lisis de colada contra la especificaci\u00f3n que nombra el pedido, con el carbono y el vanadio le\u00eddos contra los dem\u00e1s formadores de carburos y no por s\u00ed solos. La norma interna con la que trabaj\u00f3 la acer\u00eda, ya que ah\u00ed es donde est\u00e1n los l\u00edmites reales. Y el certificado de la colada que realmente se envi\u00f3, verificado contra el marcado del material. Esta p\u00e1gina imprime lo que permiten las especificaciones publicadas, no es una declaraci\u00f3n de lo que suministra una acer\u00eda en particular, y no es una especificaci\u00f3n de Aobo Steel.<\/p>\n\n\n\n

\n

Especificaciones del acero r\u00e1pido M2, PDF imprimible<\/strong><\/p>\n\n

La comparaci\u00f3n de composici\u00f3n para las especificaciones estadounidense, brit\u00e1nica y alemana, los factores de carbono y el balance de carbono de esta p\u00e1gina en un solo PDF, con nuestros datos de contacto.<\/p>\n\n

\n
Descargar PDF, 380 KB<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n

Datos de referencia relacionados<\/h2>\n\n\n\n

La lista completa de designaciones del grado, su tabla de composici\u00f3n y sus formas de suministro est\u00e1n en la p\u00e1gina del acero para herramientas M2<\/a>. El ciclo de tratamiento t\u00e9rmico se expone en la Gu\u00eda de tratamiento t\u00e9rmico del acero para herramientas M2<\/a> y el rango de dureza de trabajo en la p\u00e1gina de dureza del acero para herramientas M2<\/a>. La qu\u00edmica de cada grado en los grupos de acero para herramientas est\u00e1 en la Tabla de composici\u00f3n del acero para herramientas<\/a>, y la referencia cruzada m\u00e1s amplia est\u00e1 en la Tabla de grados equivalentes de acero para herramientas<\/a>. Las temperaturas de los grados de tungsteno est\u00e1n en la tabla de revenido del acero r\u00e1pido al tungsteno<\/a>, la familia se recopila en la cat\u00e1logo de aceros r\u00e1pidos<\/a>, y la selecci\u00f3n para trabajos de corte se cubre en la gu\u00eda de selecci\u00f3n de aceros r\u00e1pidos para herramientas de corte<\/a>.<\/p>\n\n\n\n

Datos de referencia recopilados de High Speed Steels (Geoffrey Hoyle, Butterworths, 1988). La comparaci\u00f3n de composici\u00f3n, ambas l\u00edneas de las especificaciones brit\u00e1nica y alemana, los factores de carbono y el balance de carbono trabajado provienen de la p\u00e1gina impresa 97.<\/p>","protected":false},"excerpt":{"rendered":"

M2 High Speed Steel Specifications by Standard What the American, British and German specifications permit for M2 high speed steel, with both ends of the British and German ranges printed and the carbon balance of the grade worked out on the same page. A reference summary of published practice and not an Aobo Steel specification. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","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":"disabled","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":"","background-image":"","background-repeat":"repeat","background-position":"center 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BM2, S 6-5-2<\/title>\n<meta name=\"description\" content=\"What the AISI, British and German specifications allow for M2 high speed steel, with both ends of the BS 4659 and DIN 17350 ranges and the carbon balance figure on each line.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/es\/m2-steel-specifications\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M2 High Speed Steel Specifications by Standard\" \/>\n<meta property=\"og:description\" content=\"What the AISI, British and German specifications allow for M2 high speed steel, with both ends of the BS 4659 and DIN 17350 ranges and the carbon balance figure on each line.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/es\/m2-steel-specifications\/\" \/>\n<meta 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