{"id":4506,"date":"2026-06-23T14:12:33","date_gmt":"2026-06-23T14:12:33","guid":{"rendered":"https:\/\/beiyutitanium.com\/grade-12-titanium-ti-0-3mo-0-8ni-uns-r53400\/"},"modified":"2026-08-19T03:29:00","modified_gmt":"2026-08-19T03:29:00","slug":"grade-12-titanium-ti-0-3mo-0-8ni-uns-r53400","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/es\/grade-12-titanium-ti-0-3mo-0-8ni-uns-r53400\/","title":{"rendered":"Titanio Grade 12 (Ti-0.3Mo-0.8Ni, UNS R53400): Propiedades, corrosi\u00f3n por resquicio y cu\u00e1ndo utilizarlo"},"content":{"rendered":"

<\/p>\n

El titanio Grade 12 es Ti-0.3Mo-0.8Ni, UNS R53400, Werkstoff 3.7105. ASTM B265 especifica de 0.2 a 0.4 wt% de molibdeno con de 0.6 a 0.9 wt% de n\u00edquel, lo que proporciona aproximadamente 483 MPa de resistencia m\u00ednima a la tracci\u00f3n y un umbral de corrosi\u00f3n por resquicio m\u00e1s alto que Grade 2 en salmuera caliente, a menor coste que las calidades con paladio.<\/p>\n

<\/p>\n

El titanio Grade 12 es la calidad de mejora para la corrosi\u00f3n. Es titanio comercialmente puro con peque\u00f1as adiciones de molibdeno y n\u00edquel que mejoran la resistencia a la corrosi\u00f3n por resquicio en cloruros y salmueras calientes, a un coste inferior al de las calidades con paladio. Esta p\u00e1gina explica qu\u00e9 es Grade 12, c\u00f3mo se comporta, c\u00f3mo se compara con Grade 2 y Grade 7, y cu\u00e1ndo especificarlo.<\/p>\n

<\/p>\n

Designaci\u00f3n europea:<\/strong> En el sistema EN y DIN, es Werkstoff 3.7105 (Ti-0.3Mo-0.8Ni); en ASTM, es UNS R53400 (Grade 12).<\/p>\n

Qu\u00e9 es el titanio Grade 12<\/h2>\n

Grade 12 es la aleaci\u00f3n Ti-0.3Mo-0.8Ni, UNS R53400: titanio con aproximadamente 0,3 por ciento de molibdeno y 0,8 por ciento de n\u00edquel. Estas adiciones aumentan la resistencia a la corrosi\u00f3n por resquicio y a temperaturas m\u00e1s elevadas respecto al titanio CP, manteniendo el metal soldable y conformable. Beiyu Titanium suministra Grade 12 en chapa fina, chapa gruesa, tubo y barra conforme a normas ASTM, con un certificado de inspecci\u00f3n 3.1 seg\u00fan EN 10204 y trazabilidad por n\u00famero de colada en el pedido.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Campo<\/th>\nValor indicado en la gu\u00eda<\/th>\n<\/tr>\n<\/thead>\n
Aleaci\u00f3n<\/td>\nTi-0.3Mo-0.8Ni<\/td>\n<\/tr>\n
UNS<\/td>\nR53400<\/td>\n<\/tr>\n
Molibdeno<\/td>\n0.2 a 0.4 por ciento, seg\u00fan ASTM B265 tabla 1<\/td>\n<\/tr>\n
N\u00edquel<\/td>\n0.6 a 0.9 por ciento, seg\u00fan ASTM B265 tabla 1<\/td>\n<\/tr>\n
Resistencia a la tracci\u00f3n m\u00ednima, recocido<\/td>\n483 MPa (70 ksi), seg\u00fan ASTM B265 tabla 2<\/td>\n<\/tr>\n
L\u00edmite el\u00e1stico m\u00ednimo, recocido<\/td>\n345 MPa, seg\u00fan ASTM B265 tabla 2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Propiedades mec\u00e1nicas<\/h2>\n

En condici\u00f3n recocida, Grade 12 tiene una resistencia a la tracci\u00f3n m\u00ednima ASTM cercana a 483 MPa (70 ksi) y un l\u00edmite el\u00e1stico cercano a 345 MPa (50 ksi), con un alargamiento de alrededor de 18 por ciento. Es m\u00e1s resistente que Grade 2 y mantiene un comportamiento de conformado similar. Los valores reales se confirman por colada en el certificado EN 10204 3.1.<\/p>\n\n\n\n\n\n\n\n\n
Propiedad<\/th>\nGrade 12 (Ti-0.3Mo-0.8Ni, R53400)<\/th>\n<\/tr>\n<\/thead>\n
Resistencia a la tracci\u00f3n (m\u00edn., recocido)<\/td>\n483 MPa \/ 70 ksi<\/td>\n<\/tr>\n
L\u00edmite el\u00e1stico (m\u00edn., recocido)<\/td>\n345 MPa \/ 50 ksi<\/td>\n<\/tr>\n
Alargamiento (m\u00edn.)<\/td>\n18 por ciento<\/td>\n<\/tr>\n
Caracter\u00edstica principal<\/td>\nresistencia a la corrosi\u00f3n por resquicio en cloruros y salmueras calientes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Resistencia a la corrosi\u00f3n<\/h2>\n

La corrosi\u00f3n por resquicio es el motivo por el que se compra Grade 12. El Grade 2 CP puede sufrir ataque por resquicio en soluciones concentradas de cloruros calientes; el molibdeno y el n\u00edquel de Grade 12 elevan ese l\u00edmite, por lo que resiste en salmueras y corrientes de proceso m\u00e1s calientes. Mantiene la resistencia general a la corrosi\u00f3n del titanio en medios oxidantes y neutros. Para \u00e1cidos reductores fuertes, el paladio de Grade 7 sigue siendo la mejor opci\u00f3n.<\/p>\n

Grade 12 frente a Grade 2<\/h2>\n

Grade 2 es la calidad de referencia para la corrosi\u00f3n en servicio a temperatura ambiente y moderadamente c\u00e1lido, y es m\u00e1s econ\u00f3mica. Grade 12 es la mejora cuando el mismo cloruro o salmuera funciona a una temperatura suficientemente alta como para arriesgar ataque por resquicio en Grade 2. Especifique Grade 12 en lugar de Grade 2 cuando aumenten la temperatura y la concentraci\u00f3n de cloruros; mantenga Grade 2 cuando el servicio est\u00e9 dentro de sus l\u00edmites.<\/p>\n\n\n\n\n\n\n
En comparaci\u00f3n con<\/th>\nQu\u00e9 indica la gu\u00eda<\/th>\n<\/tr>\n<\/thead>\n
Grade 2<\/td>\nGrade 2 es el material de uso habitual frente a la corrosi\u00f3n para servicio a temperatura ambiente y moderadamente c\u00e1lida, y es m\u00e1s econ\u00f3mico. Grade 12 es la mejora cuando el mismo medio con cloruros o salmuera alcanza una temperatura suficiente para que Grade 2 corra riesgo de ataque por resquicio<\/td>\n<\/tr>\n
Grade 7<\/td>\nGrade 7 a\u00f1ade 0,15 por ciento de paladio para obtener la m\u00e1xima resistencia a los \u00e1cidos reductores y a la corrosi\u00f3n por resquicio, y cuesta m\u00e1s debido al paladio. Grade 12 alcanza parte de esa resistencia por resquicio mediante molibdeno y n\u00edquel a menor coste<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Grade 12 frente a Grade 7<\/h2>\n

Grade 7 a\u00f1ade 0,15 por ciento de paladio para ofrecer la mejor resistencia a los \u00e1cidos reductores y a la corrosi\u00f3n por resquicio, y cuesta m\u00e1s debido al paladio. Grade 12 alcanza parte de esa resistencia por resquicio mediante molibdeno y n\u00edquel a menor coste. Para servicio con salmuera caliente y cloruros con un presupuesto limitado, Grade 12 es la elecci\u00f3n pr\u00e1ctica; para \u00e1cidos reductores agresivos, Grade 7 justifica el coste superior.<\/p>\n

Aplicaciones t\u00edpicas<\/h2>\n

Grade 12 se especifica para intercambiadores de calor, condensadores y equipos de proceso en servicio con cloruros o salmuera calientes: procesamiento qu\u00edmico, instalaci\u00f3n geot\u00e9rmica, autoclaves de hidrometalurgia y sistemas de agua de mar donde Grade 2 supondr\u00eda riesgo de corrosi\u00f3n por resquicio. Se elige por su comportamiento frente a la corrosi\u00f3n a temperatura, no por su resistencia.<\/p>\n\n\n\n\n\n\n
D\u00f3nde indica la gu\u00eda que se especifica<\/th>\nDetalle<\/th>\n<\/tr>\n<\/thead>\n
Intercambiadores de calor, condensadores y equipos de proceso<\/td>\nEn servicio con cloruros o salmuera calientes<\/td>\n<\/tr>\n
Procesamiento qu\u00edmico, plantas geot\u00e9rmicas, autoclaves de hidrometalurgia y sistemas de agua de mar<\/td>\nDonde Grade 2 correr\u00eda riesgo de corrosi\u00f3n por resquicio<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Formas y normas<\/h2>\n

Beiyu suministra Grade 12 como chapa fina y chapa gruesa conforme a ASTM B265, tubo conforme a ASTM B338 y barra conforme a ASTM B348. Indique la calidad junto con la forma en la solicitud: espesor o di\u00e1metro exterior y espesor de pared, anchura o longitud, condici\u00f3n superficial y alcance del certificado. Para tubo utilizado en intercambiadores de calor, consulte la gama de tubos y tuber\u00edas de titanio<\/a>.<\/p>\n\n\n\n\n\n\n\n
Forma<\/th>\nNorma que cita la gu\u00eda<\/th>\n<\/tr>\n<\/thead>\n
Chapa fina y chapa gruesa<\/td>\nASTM B265<\/td>\n<\/tr>\n
Tubo<\/td>\nASTM B338<\/td>\n<\/tr>\n
Barra<\/td>\nASTM B348<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Coste y c\u00f3mo especificarlo<\/h2>\n

Grade 12 cuesta un poco m\u00e1s que Grade 2 debido a las adiciones de aleaci\u00f3n, y menos que Grade 7 con paladio. Para obtener una oferta precisa, indique la calidad, la norma, las dimensiones, la condici\u00f3n y el alcance del certificado. El material se suministra con un certificado de inspecci\u00f3n 3.1 seg\u00fan EN 10204 y trazabilidad por n\u00famero de colada seg\u00fan el alcance del pedido.<\/p>\n

Preguntas frecuentes<\/h2>\n

\u00bfPara qu\u00e9 se utiliza el titanio Grade 12?<\/strong> Intercambiadores de calor y equipos de proceso en servicio con cloruros calientes o salmuera, donde Grade 2 CP presenta riesgo de corrosi\u00f3n por resquicio.<\/p>\n

\u00bfEs Grade 12 m\u00e1s resistente que Grade 2?<\/strong> S\u00ed, modestamente: aproximadamente 483 MPa m\u00ednimos de resistencia a la tracci\u00f3n frente a 345 MPa para Grade 2, con una conformabilidad similar.<\/p>\n

\u00bfGrade 12 o Grade 7 para corrosi\u00f3n por resquicio?<\/strong> Grade 12 cubre el servicio con salmuera caliente y resquicios con cloruros a menor coste; Grade 7 es mejor para \u00e1cidos reductores fuertes y cuesta m\u00e1s.<\/p>\n

\u00bfQu\u00e9 normas cubren Grade 12?<\/strong> ASTM B265 para chapa fina y chapa gruesa, B338 para tubo y B348 para barra.<\/p>\n

Beiyu Titanium es la marca internacional de exportaci\u00f3n de titanio de Jiaxing Beiyu New Materials Technology Co., Ltd., un proveedor y exportador de titanio & con respaldo de producci\u00f3n directa en Baoji, Shaanxi. Para una oferta de titanio Grade 12 con un certificado de inspecci\u00f3n 3.1 seg\u00fan EN 10204, env\u00ede la forma, el tama\u00f1o y la norma a penn@beiyutitanium.com. Para comparar primero las calidades, consulte la gu\u00eda comparativa de calidades de titanio<\/a> y la p\u00e1gina de titanio Grade 7<\/a>.<\/p>\n

<\/p>\n

Qu\u00e9 indicar al pedir Grade 12<\/h2>\n

Grade 12 se pide con menor frecuencia que Grade 2, por lo que menos compradores disponen de una plantilla interna para esta calidad, y los campos que se dejan en blanco son previsibles. La aleaci\u00f3n se define por peque\u00f1as adiciones deliberadas: molibdeno de 0.2 a 0.4 por ciento y n\u00edquel de 0.6 a 0.9 por ciento, con un m\u00e1ximo de 0.25 por ciento de ox\u00edgeno y de 0.30 por ciento de hierro para barra (ASTM B348, requisitos qu\u00edmicos). Son l\u00edmites del an\u00e1lisis de colada, algo importante cuando se compara con ellos un an\u00e1lisis posterior del producto.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
L\u00ednea del pedido<\/th>\nParticularidades de Grade 12<\/th>\n<\/tr>\n<\/thead>\n
Calidad y UNS<\/td>\nGrade 12, UNS R53400, indicados conjuntamente para que la aleaci\u00f3n no se interprete como titanio sin alear<\/td>\n<\/tr>\n
Clasificaci\u00f3n del producto<\/td>\nBarra o tocho, lo que determina qu\u00e9 conjunto de requisitos se aplica<\/td>\n<\/tr>\n
Norma aplicable<\/td>\nIndicada junto a la calidad, ya que la misma calidad aparece en m\u00e1s de una especificaci\u00f3n de producto<\/td>\n<\/tr>\n
Requisitos qu\u00edmicos<\/td>\nSeg\u00fan qu\u00e9 tabla de composici\u00f3n se documenta el an\u00e1lisis<\/td>\n<\/tr>\n
Requisitos mec\u00e1nicos<\/td>\nQu\u00e9 m\u00ednimos de resistencia y alargamiento se indican<\/td>\n<\/tr>\n
Condici\u00f3n superficial<\/td>\nEl acabado de suministro, indicado por separado del estado metal\u00fargico<\/td>\n<\/tr>\n
Informes requeridos<\/td>\nEl alcance de los informes, m\u00e1s all\u00e1 de los resultados que la especificaci\u00f3n ya exige<\/td>\n<\/tr>\n
Tratamiento del material rechazado<\/td>\nAcordado de antemano en lugar de negociado despu\u00e9s de un resultado<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Siete de esas l\u00edneas figuran entre los datos que la especificaci\u00f3n de barras y tochos ASTM B348 espera que contenga un pedido, que tambi\u00e9n incluye el marcado y el embalaje omitidos en la tabla anterior; la norma aplicable no figura en esa lista y se incluye aqu\u00ed porque la misma calidad aparece en m\u00e1s de una especificaci\u00f3n de producto (ASTM B348, informaci\u00f3n para pedidos). Beiyu Titanium revisa la combinaci\u00f3n solicitada de calidad, norma, dimensiones, tolerancia, estado superficial y alcance de la inspecci\u00f3n antes de preparar la oferta, por lo que una consulta que los incluya puede responderse sin una ronda de aclaraciones.<\/p>\n

Detalles de especificaci\u00f3n con fuentes<\/h2>\n

Grade 12 (UNS R53400) incorpora de 0.2 a 0.4% de molibdeno y de 0.6 a 0.9% de n\u00edquel al titanio sin alear, seg\u00fan ASTM B265, tabla 1. Estas adiciones elevan los m\u00ednimos en estado recocido a 483 MPa (70 ksi) de resistencia a la tracci\u00f3n y 345 MPa de l\u00edmite el\u00e1stico, seg\u00fan ASTM B265, tabla 2, frente a 345 MPa y 275 MPa para Grade 2.<\/p>\n

The Mo and Ni additions target crevice corrosion in hot chloride service. TIMET’s Corrosion Resistance of Titanium reports that, in sharp crevices in near-neutral saturated sodium chloride brine, crevice corrosion of unalloyed titanium becomes possible at about 93 \u00b0C (200 \u00b0F) and above, while it is not likely below 70 \u00b0C (158 \u00b0F); lower pH or high concentrations of calcium or magnesium ions can lower the onset temperature. Grade 12 was developed to hold resistance beyond that window while staying leaner than the palladium-bearing Grade 7.<\/p>\n

<\/p>","protected":false},"excerpt":{"rendered":"

Grade 12 titanium is Ti-0.3Mo-0.8Ni, UNS R53400, Werkstoff 3.7105. ASTM B265 specifies 0.2 to 0.4 wt% molybdenum with 0.6 to 0.9 wt% nickel, giving about 483 MPa minimum tensile strength and a higher crevice corrosion threshold than Grade 2 in hot brine, at lower cost than the palladium grades. Grade 12 titanium is the corrosion-upgrade […]<\/p>\n","protected":false},"author":2,"featured_media":4762,"comment_status":"open","ping_status":"open","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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