Cr12MoV Tool Steel (D2 / 1.2379 / SKD11 Alternative) Supplier from China
Cost-Effective D2 Alternative | Bulk Supply for Distributors & Stockists
Cr12MoV tool steel is a high-carbon, high-chromium ledeburite cold-work tool steel with high hardness, wear resistance, and minimal quenching distortion. This steel grade is an improved version of Cr12 tool steel, with the addition of molybdenum (Mo) and vanadium (V) elements to enhance its performance characteristics.
Cr12MoV Tool Steel Supply Overview
| Calificación | GB Cr12MoV |
| Condiciones de entrega | Totalmente recocido (estado blando para el mecanizado) |
| Formularios disponibles | Barra redonda / Barra plana / Placa / Bloque forjado |
| Capacidad de producción mensual | Aproximadamente 1000 toneladas métricas |
| Cantidad de exportación recomendada | Contenedor completo de 20GP (~26 toneladas) |
| Cantidad mínima de pedido | 5 toneladas |
| Plazo de entrega (con existencias de lingotes) | Aproximadamente 20 días |
| Plazo de entrega (fundición reciente) | 30–45 días |
| Plazo de entrega (Grado ESR) | Aproximadamente 60 días |
| Inspección | Equipo interno de pruebas ultrasónicas + Inspección por terceros disponible |
| Documentación | MTC (EN 10204 3.1) + Informe UT |
Why Global Distributors Source Cr12MoV from Aobo Steel
- Suministro mensual continuo de alrededor de 1000 toneladas
- Cantidad mínima de pedido (MOQ) a partir de 5 toneladas para pedidos al por mayor.
- Longitudes de barras y placas optimizadas para contenedores
- Se admiten tamaños mixtos para la carga de exportación.
- Entrega recocida para mecanizado posterior
- Abastecimiento estable a través de socios de cadena de suministro integrados
- Inspección UT disponible para SEP 1921-82 D/d o E/e
- Trazabilidad del MTC y del lote con cada envío
- Seguimiento del número de lote para el control de pedidos
- Opciones de superficie negra, torneada y pulida
- Embalaje a granel para exportación marítima
- Ruta de conversión clara a la página dedicada al suministro a granel.
Producción estable para un suministro a granel a largo plazo
- Producción mensual continua de alrededor de 1000 toneladas.
- Ciclos de producción continuos para la reposición de inventario.
- El proceso ESR (refundición por electroescoria) está disponible bajo petición.
- Suministro estable de aleaciones para reducir el riesgo de interrupción del suministro.
- Trazabilidad completa del lote vinculada al número de colada original.
Available Cr12MoV Tool Steel Forms
Control de calidad para pedidos al por mayor
Cada lote de acero para herramientas suministrado por Aobo Steel se verifica antes del envío para garantizar la precisión del grado, la integridad interna y la trazabilidad de los pedidos a granel.
- Composición química verificada mediante un espectrómetro.
- Pruebas ultrasónicas disponibles (SEP 1921-82)
- Entregado en estado recocido esferoidizado
- Certificado de prueba de fábrica (EN 10204 3.1) con número de colada
- Inspección dimensional y superficial antes del envío.
Embalaje para exportación y carga de contenedores
- Embalaje profesional apto para exportación marítima
- Carga de 20GP optimizada hasta ~26 toneladas
- Se admiten grados y tamaños mixtos.
- Protección anticorrosión para largos tránsitos marítimos
Para envíos internacionales, se recomienda encarecidamente la carga de contenedores completos para garantizar la rentabilidad y una tramitación aduanera más ágil.
1. Composition of Cr12MoV Steel（GB/ T 1299—2000）
| C | Si | Minnesota | Cr | V | Mes | S | P |
|---|---|---|---|---|---|---|---|
| 1.45 ~ 1.70 | ≤0,40 | ≤0,40 | 11.00 ~ 12.50 | 0.15 ~ 0.30 | 0.40 ~ 0.60 | ≤0,030 | ≤0,030 |
2. Properties of Cr12MoV Steel
Critical Point Temperature
| Punto crítico | Ac₁ | Ac₃ | Ar₁ | EM |
|---|---|---|---|---|
| Temperatura / °C | 810 | 1200 | 760 | 185 |
Linear Expansion Coefficient
| Temperatura / °C | Linear Expansion Coefficient α / (10⁻⁶ °C⁻¹) |
|---|---|
| 20 ~ 100 | 10.9 |
| 20 ~ 400 | 11.4 |
| 20 ~ 600 | 12.2 |
Cr12MoV is a high-carbon, high-chromium, high-hardenability ledeburitic steel. It is characterized by high hardness, good impact toughness, high hardenability, and low distortion upon quenching.
For cross-sectional dimensions up to 400mm, it can be fully through-hardened. Furthermore, it maintains good hardness and wear resistance at elevated temperatures between 300 and 400 °C.
With minimal volumetric change during quenching and excellent overall mechanical properties, Cr12MoV is considered a representative steel grade for high-end cold-work tooling materials.
3. Forging Process Specification of Cr12MoV Steel
| Artículo | Heating Temp. / °C | Temperatura inicial de forjado / °C | Temperatura final de forjado / °C | Método de enfriamiento |
|---|---|---|---|---|
| Ingot | 1100 ~ 1150 | 1050 ~ 1100 | 850 ~ 900 | Enfriamiento lento (enfriamiento en foso o arena) |
| Billet | 1050 ~ 1100 | 1000 ~ 1050 | 850 ~ 900 | Enfriamiento lento (enfriamiento en foso o arena) |
Note: Cr12MoV steel has a low melting point, so the heating temperature should not be too high; it also has poor thermal conductivity, so heating should be slow. After forging, it must be cooled slowly to avoid cracks. It can be placed in a preheated pit and cooled to 400-500°C. Annealing can be performed after cooling.
4. Heat Treatment of Cr12MoV Steel
4.1 Precalentamiento
| Parámetros del proceso | |
|---|---|
| Recocido posterior al forjado | Heating temperature 850 ~ 870°C, hold for 1 ~ 2h, furnace cool to 720 ~ 750°C, hold for 3 ~ 4h, furnace cool to below 550°C, then air cool. Hardness after annealing is 207 ~ 255HBW. Microstructure is fine pearlite + carbide. |
| Recocido isotérmico posterior al forjado | Heating temperature: 760 ~ 790°C; hold for 2 ~ 3h; furnace cool or air cool. Hardness is 207 ~ 255HBW. |
| High-Temperature Tempering | Heating temperature: 850 ~ 870°C; hold for 1 ~ 2h; furnace cool to 720 ~ 750°C; hold for 3 ~ 4h; furnace cool to below 550°C; then air cool. Hardness after annealing is 207 ~ 255HBW. Microstructure is fine pearlite + carbide. |
4.2 Enfriamiento
(Austenitizing Temperature 980C)
Quenching Process Specifications for Cr12MoV Steel
| Scheme | 1st Preheating Temp./°C | 2nd Preheating Temp./°C | Quenching Temp./°C | Quenching Medium | Quenching Medium Temp./°C | Cooling in Medium | Subsequently | Dureza HRC |
| I | 550 ~ 600 | 840 ~ 860 | 950 ~ 1000 | Aceite | 20 ~ 60 | To oil temp | Air cooling | 58 ~ 62 |
| II | 1020 ~ 1040 | Aceite | 20 ~ 60 | To oil temp | Air cooling | 62 ~ 63 | ||
| III | 1020 ~ 1040 | Molten nitrate salt | 400 ~ 550 | 5 ~ 10min | Air cooling | 62 ~ 63 | ||
| IV | 1115 ~ 1130 | Aceite | 20 ~ 60 | To oil temp | Air cooling | 42 ~ 50 | ||
| V | 1115 ~ 1130 | Molten nitrate salt | 400 ~ 450 | 5 ~ 10min | Air cooling | 42 ~ 50 |
Note: Schemes IV and V are used for molds that require hot hardness and high wear resistance, such as hot-stamping dies operating below 450°C, but their mechanical properties are poor, and dimensional deformation is large. After quenching according to schemes I and II, the microstructural volume fractions are 12% carbides, 68% to 73% martensite, and 20% to 25% retained austenite.
Hardness and Quenching Temperature Under Different Heating and Cooling Conditions
| Heating Conditions | Método de enfriamiento | Quenching Temp./°C | Dureza HRC |
| Heating in carburizing agent | Oil cooling | 930 | 64 |
| 980 | 65 | ||
| 1010 | 65 | ||
| 1030 | 63.5 | ||
| Heating in air furnace | Oil cooling | 930 | 60.2 |
| 980 | 63 | ||
| 1010 | 63.9 | ||
| 1030 | 63.5 | ||
| Heating in air furnace | Air cooling | 930 | 59 |
| 980 | 62.5 | ||
| 1010 | 63.2 | ||
| 1030 | 62 |
4.3 Templado
Tempering Process Specifications
| Scheme | Quenching Temp./°C | Propósito del templado | Tempering Temp./°C | Medio | Dureza HRC |
| I | 1020 ～ 1040 | Stress relief | 150 ~ 170 | Oil or nitrate salt | 61 ~ 63 |
| II | Stress relief, reduce hardness | 200 ~ 275 | — | 57 ~ 59 | |
| III | 400 ~ 425 | — | 55 ~ 57 | ||
| IV | 1115 ~ 1130 | Stress relief and secondary hardening | 510 ~ 520℃ Multiple tempering | — | 60 ~ 61 |
| V | -78℃ Cryogenic treatment + 510 ~ 520℃ single tempering | — | 60 ~ 61 | ||
| VI | -78℃ Cryogenic treatment plus one 510 ~ 520℃ tempering, then another -78℃ cryogenic treatment | — | 61 ~ 62 |
Nota:
- Workpieces tempered according to Scheme I need to maintain high hardness and high wear resistance, and their dimensional changes are almost independent of the quenching state.
- Scheme II is used to obtain workpieces with good toughness.
(Tempering After 1000℃ Oil Quenching)
Tempering Temperature and Hardness
| Tempering Temp./°C | Untempered | 100 | 200 | 300 | 400 | 500 | 550 | 600 | 650 |
|---|---|---|---|---|---|---|---|---|---|
| Dureza HRC | 63 | 62 | 61 | 59 | 57 | 59 | 53 | 47 | 40 |
Nota: Oil-quenched at 1030°C, tempered for 2 hours.
5. Applications
Cr12MoV steel is suitable for manufacturing a wide variety of tools and dies characterized by large cross-sections, complex shapes, and significant impact loads. Examples of such applications include:
- Punching dies with complex geometries
- General stamping dies
- Blanking dies for silicon steel sheets
- Trimming dies
- Edge rolling/curling dies
- Wire drawing dies
- Cold extrusion dies
- Deep drawing dies for steel plate
- Thread rolling plates
- Cold shearing blades
- Circular saws
- Standard tools and gauges