Acero 25CrMo4 (1.7218)

Acero 25CrMo4 (1.7218)

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Acero 25CrMo4 (1.7218) – Especificaciones Técnicas y Propiedades


Acero 25CrMo4 (1.7218)

Información General

El acero 25CrMo4 (designación 1.7218) es un acero aleado con cromo y molibdeno de temple y revenido con bajo contenido de carbono. Este acero combina alta resistencia con alta tenacidad, siendo ideal para aplicaciones que requieren propiedades mecánicas superiores. Su composición química optimizada permite obtener excelentes características de soldabilidad bajo ciertas condiciones controladas.

Capacidades de Producción Especializada

Fabricación integral con procesos avanzados y acabados de precisión

Alta Resistencia

Excelentes propiedades mecánicas con resistencia superior

Alta Tenacidad

Combinación única de resistencia y tenacidad para aplicaciones críticas

Soldabilidad Controlada

Soldable bajo condiciones específicas con precalentamiento adecuado

Versatilidad de Entrega

Disponible laminado, recocido blando, normalizado o temple y revenido

Métodos de Producción y Formas Disponibles

Método de Producción Formas Disponibles Dimensiones Máximas Aplicaciones Típicas
Laminado en Caliente Redondo, Plano, Placa Hasta 300mm de diámetro Componentes estructurales, ejes
Forjado en Caliente Redondo, Plano, Placa Hasta 1200mm de diámetro Piezas de gran tamaño, componentes críticos

Nuestras Ventajas Competitivas

Tratamiento Térmico Integral

Procesos completos de temple y revenido internos garantizando calidad constante y tiempos de entrega optimizados

Acabados de Precisión

Servicios de torneado y rectificado propios, entregando productos listos para uso inmediato

Control de Calidad Total

Trazabilidad completa desde la fusión hasta el producto final con certificaciones incluidas

Solución Integral

Reducción significativa de costos y tiempos para nuestros clientes eliminando procesos externos

Composición Química – EN ISO 683-2

Elemento Mínimo (%) Máximo (%) Función Metalúrgica
Carbono (C) 0.22 0.29 Proporciona dureza y resistencia
Silicio (Si) 0.10 0.40 Desoxidante y mejora la tenacidad
Manganeso (Mn) 0.60 0.90 Mejora la templabilidad
Cromo (Cr) 0.90 1.20 Aumenta templabilidad y resistencia al desgaste
Molibdeno (Mo) 0.15 0.30 Mejora tenacidad y templabilidad
Fósforo (P) – 0.025 Elemento residual controlado
Azufre (S) – 0.035 Elemento residual controlado

Propiedades Mecánicas

Condición Diámetro (mm) Límite Elástico (MPa) Resistencia Tracción (MPa) Alargamiento (%) Dureza
Recocido (+A) – 420 590 típico 25 185 HB típico
Temple y Revenido (+QT) 25-40 600 800-950 14 240-280 HB
Temple y Revenido (+QT) 40-100 450 700-850 15 200-250 HB
Temple y Revenido (+QT) 100-160 400 650-800 16 190-240 HB

Temperaturas de Transformación

Punto de Transformación Temperatura (°C) Significado
AC1 746 Inicio de formación de austenita
AC3 826 Transformación completa a austenita
MS 391 Inicio de transformación martensítica

Recomendaciones de Tratamiento Térmico

Tratamiento Condición Temperatura (°C) Enfriamiento Objetivo
Forja en Caliente +AR 850-1100°C Aire quieto Conformado inicial
Normalizado +N 840-880°C Aire quieto Homogeneización
Recocido Blando +A 700-730°C Aire quieto Máxima maquinabilidad
Temple +QT 840-870°C Aceite Máxima dureza
Revenido +T 550-675°C – Tenacidad optimizada

Propiedades Físicas

Propiedad Valor Unidad
Módulo de Young 210 GPa
Coeficiente de Poisson 0.3 –
Densidad 7800 kg/m³
Conductividad Térmica 40-45 W/m°K

Designaciones Equivalentes

Normas Internacionales

SS 2225 – Norma sueca | AISI 4130 – Norma americana | 1.7218 – Designación europea

Características de Soldabilidad

Parámetro Valor Máximo Recomendación
CEV 0.65 Precalentamiento recomendado
Pcm 0.38 Control de velocidad de enfriamiento

Aplicaciones Principales

Industria Aeronáutica

Componentes estructurales de aeronaves, soportes de motor y elementos que requieren alta relación resistencia/peso

Sector Automotriz

Ejes de transmisión, componentes de suspensión y piezas del tren motriz donde se requiere alta tenacidad

Maquinaria Industrial

Ejes principales, componentes de máquinas herramienta y elementos sometidos a cargas dinámicas

Construcción de Estructuras

Elementos estructurales soldados en construcción de alta resistencia y aplicaciones offshore


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