Acero 961 S47310 Martensítico Resistente al Calor

Acero 961 S47310 Martensítico Resistente al Calor

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Acero 961 S47310 Martensítico Resistente al Calor

Aleación 13Cr11Ni2W2MoV de Alto Rendimiento para Aplicaciones de Temperatura Extrema hasta 600°C

Resumen Ejecutivo: Acero de Turbina de Grado Aeroespacial

Definición del Producto: El acero 961 S47310 es un acero inoxidable martensítico resistente al calor de origen soviético (designación original 3И961), optimizado para componentes críticos que operan continuamente entre 500-600°C bajo tensiones de fluencia elevadas.

Ventaja Competitiva SHUNFU: Como fabricante directo con 20 años de experiencia, controlamos todo el proceso desde fusión ESR hasta tratamiento térmico final, garantizando homogeneidad microestructural y trazabilidad completa del lote.

Estados de Suministro Disponibles:

  • Laminado en Caliente: Ø20-200mm, descarburación controlada
  • Forjado: Ø150-800mm, grano refinado ASTM 6-8
  • Pelado/Torneado: Ra ≤3.2μm, tolerancia h9
  • Tratado Térmicamente: Temple + Doble revenido, dureza 32-40 HRC

Equivalencias de Normas Internacionales

País/Región Norma Designación Nota Técnica
Estados Unidos ASTM A473 / UNS S47310 Composición idéntica
China GB/T 1220 13Cr11Ni2W2MoV Norma actual
China (Anterior) GB/T 1220-1992 1Cr11Ni2W2MoV Designación histórica
Rusia/URSS GOST 3И961 Desarrollo original
Europa EN 10088 X12CrNiWMoV12-2-2 Aproximado
Japón JIS G4303 SUH616 Propiedades similares

Especificaciones Técnicas Críticas

Composición Química (% en peso)

C Cr Ni W Mo V Si Mn P S
0.10-0.16 10.5-12.0 1.50-2.00 1.50-2.00 0.35-0.50 0.18-0.30 ≤0.60 ≤0.60 ≤0.030 ≤0.020

Control Metalúrgico SHUNFU: Fusión EAF + VD + Refino LF garantiza P≤0.025%, S≤0.015%. Adición controlada de tungsteno y vanadio mediante ferroaleaciones de alta pureza para precipitación uniforme de carburos M23C6 y MC.

Propiedades Mecánicas (Estado Temple + Revenido 620-680°C)

Temperatura Ambiente (20°C)

  • Resistencia a Tracción: ≥1080 MPa
  • Límite Elástico Rp0.2: ≥835 MPa
  • Alargamiento A: ≥10%
  • Estricción Z: ≥40%
  • Energía Impacto KV: ≥39 J
  • Dureza: 32-40 HRC

Alta Temperatura (600°C)

  • Resistencia a Tracción: ≥590 MPa
  • Límite Elástico: ≥490 MPa
  • Resistencia Fluencia 1000h: ≥350 MPa
  • Resistencia Fluencia 10000h: ≥280 MPa
  • Coeficiente Expansión: 12.5 × 10⁻⁶/°C
  • Conductividad Térmica: 25 W/m·K

Fabricación y Control de Calidad: Ventaja SHUNFU

Proceso de Fusión Avanzado

SHUNFU emplea tecnología de refusión por electroescoria (ESR) combinada con desgasificación al vacío para eliminar inclusiones no metálicas y conseguir la estructura dendrítica refinada esencial para resistencia a la fluencia a 600°C.

  • Fusión primaria: Horno de arco eléctrico (EAF) 50T
  • Refino secundario: Estación VD + LF con control de temperatura ±5°C
  • Solidificación: Colada continua con enfriamiento controlado
  • Homogeneización: 1200°C × 24h para eliminación de microsegregación

Tratamiento Térmico de Precisión

Proceso Temperatura Tiempo Permanencia Medio Enfriamiento Dureza Objetivo
Temple 1000-1050°C 0.5-2h según espesor Aceite o aire forzado 48-54 HRC
Revenido 1° 620-680°C 2-4h Aire 38-44 HRC
Revenido 2° (recomendado) 620-680°C 2-4h Aire 32-40 HRC
Recocido (mecanizado) 850-880°C Según sección Horno hasta 500°C ≤255 HB

Inspección No Destructiva (END)

SHUNFU garantiza inspección ultrasónica Clase C/c según SEP 1921 para detección de defectos ≥1.5mm en componentes forjados de diámetro >150mm.

  • Ultrasonidos: Equipo Olympus EPOCH 650, transductores 2-10 MHz
  • Partículas Magnéticas: ASTM A275 para detección fisuras superficiales
  • Líquidos Penetrantes: ASTM E165 Clase 2 post-mecanizado
  • Ensayo Macrográfico: Ataque Marble para verificación estructura martensítica

Servicios de Procesamiento y Valor Añadido

Mecanizado de Precisión BTA

SHUNFU dispone de capacidad de taladrado profundo BTA hasta Ø200mm × 6000mm longitud con tolerancia IT9 y rugosidad Ra ≤6.3μm, crítico para componentes de turbina con canales internos de refrigeración.

Servicios de Acabado Superficial

Proceso Rango Diámetros Tolerancia Rugosidad Aplicación Típica
Pelado Ø20-200mm h11 Ra 6.3μm Pre-mecanizado, inspección UT
Torneado Desbaste Ø30-800mm h9 Ra 3.2μm Ejes, bridas, discos
Rectificado Ø20-300mm h7 Ra 0.8μm Superficie sellado, ajustes
Corte a Medida Cualquier dimensión ±1mm – Optimización material

Aplicaciones Industriales Críticas

Industria Aeroespacial

  • Álabes compresores turborreactores hasta 600°C
  • Discos de turbina para motores CFM56, V2500
  • Elementos estructurales cámara combustión
  • Componentes sistema postcombustión

Generación Energética

  • Tornillería turbinas vapor supercrítico
  • Rotores compresores centrales ciclo combinado
  • Elementos fijación colectores solares CSP
  • Componentes reactores alta temperatura

Industria Petroquímica

  • Reactores reformado catalítico 500-580°C
  • Elementos internos columnas destilación
  • Tornillería resistente H2S + alta temperatura
  • Componentes hornos pirólisis etileno

Automoción de Alto Rendimiento

  • Válvulas escape motores turbo hasta 850°C
  • Elementos turbocompresores competición
  • Componentes sistemas escape deportivos
  • Resortes temperatura para transmisiones

Rangos de Tamaños y Condiciones de Entrega

Productos Laminados en Caliente

Forma Producto Rango Dimensional Longitud Estándar Tolerancia Estado Superficie
Barra Redonda Ø20mm – Ø200mm 3-12m h11 Laminado + decapado
Barra Plana 10-80mm espesor 3-12m ±1mm Laminado + granallado
Placa 8-100mm espesor 2-8m × 1-3m ±2mm Normalizado superficie
Alambrón Ø5.5mm – Ø25mm Rollos 500-2000kg h13 Decapado brillante

Productos Forjados (Grano Refinado)

Forma Producto Rango Dimensional Peso Máximo Estructura Grano Inspección Estándar
Redondo Forjado Ø150mm – Ø800mm 8 toneladas ASTM 6-8 UT 100% + Macro
Plano Forjado 80-500mm espesor 12 toneladas ASTM 6-8 UT según SEP 1921
Bloque Forjado Dimensiones especiales 15 toneladas ASTM 5-7 UT + Ensayo impacto
Anillo Forjado Ø500-3000mm ext 10 toneladas ASTM 6-8 UT radial + dimensional

Preguntas Frecuentes: Guía del Comprador

P: ¿Qué ventajas ofrece el tungsteno en la composición del 961 S47310?

R: El tungsteno (1.5-2.0%) forma carburos M6C estables hasta 650°C que impiden el crecimiento de grano durante exposición prolongada. Esta característica es crítica para mantenimiento del límite elástico en palas de turbina con 25,000+ horas de servicio.

P: ¿SHUNFU puede suministrar con certificación de terceros?

R: Sí. Colaboramos con Lloyd’s Register, TUV, SGS para certificación de propiedades mecánicas, composición química y ensayos no destructivos según normas del cliente (ASTM, EN, JIS).

P: ¿Cuál es el plazo de entrega para forjas de grandes dimensiones?

R: Forjas Ø300-600mm: 45-60 días. Forjas >Ø600mm: 75-90 días. Incluye forja, tratamiento térmico, inspección UT y emisión certificados. Contacte SHUNFU para cronogramas específicos de su proyecto.

P: ¿Garantizan las propiedades a 600°C después del tratamiento térmico?

R: Absolutamente. Cada lote incluye ensayo de tracción a 600°C con probetas testigo del mismo tratamiento térmico. Garantizamos Rm ≥590 MPa y Rp0.2 ≥490 MPa a 600°C.

Solicite Cotización para Acero 961 S47310

Como fabricante directo, SHUNFU ofrece precios competitivos para pedidos de gran volumen, dimensiones personalizadas y especificaciones técnicas específicas.

Teléfono Internacional:
+86-731-89903933
Email Técnico:
info.es@shunfusteel.com
Oficina Europa:
Consulte horarios locales

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