1. Descripción general
50CrV4, known internationally as AISI 6150 or SUP10, is a chromium-vanadium alloy spring steel that combines high strength, elasticidad, and toughness.
It is particularly suitable for automotive suspension springs, clutches, and high-stress mechanical components where resistance to fatigue and shock loading is critical.
Jiaxiao MTC produces 50CrV4 alloy steel strips en endurecido y revenido o cold-rolled annealed conditions, ensuring precise control of hardness, acabado superficial, and dimensional tolerances.
2. Chemical Composition and Equivalent Grades
| Estándar | Equivalent Grades | C (%) | Minnesota (%) | Y (%) | cr (%) | V (%) | P max | S max |
|---|---|---|---|---|---|---|---|---|
| DE | 50CrV4 | 0.47–0.55 | 0.70–1.10 | 0.15–0.40 | 0.90–1.20 | 0.10–0.25 | ≤0,035 | ≤0,035 |
| AISI | 6150 | — | — | — | — | — | — | — |
| ÉL | SUP10 | — | — | — | — | — | — | — |
Chromium improves hardenability and wear resistance, while vanadium refines the grain structure, improving strength and fatigue performance.
3. Production and Heat Treatment Process
50CrV4 strips are produced through a multi-stage precision rolling and thermal treatment process:
- Hot Rolled Coils — sourced from ISO-certified steel mills.
- Acid Pickling — removal of oxidation and surface impurities.
- Laminado en frío — reduces thickness and enhances dimensional accuracy.
- Recocido (optional) — improves ductility for cold forming.
- Hardening and Tempering — precise heat treatment in controlled atmosphere furnaces.
- Endurecimiento: Heated above the austenitizing temperature (aprox. 850°C–880°C) and quenched.
- Templado: Reheated to 400–600°C to achieve desired balance between hardness and toughness.
This sequence provides a fine-grained structure with uniform hardness and improved resilience under repeated stress.
4. Propiedades mecánicas
| Condición | Dureza | Resistencia a la tracción | Límite elástico | Acabado superficial | Edge Options |
|---|---|---|---|---|---|
| recocido | ≤200 HV | 600–800 N/mm² | Medium | Brillante / Pulido | Mill / Abertura |
| Curtido & Templado | 40–52 HRC | 1400–1800 N/mm² | Alto | Azul / Yellow / Pulido | Square / Redondeado |
Rango de grosor: 0.1–5.0 mm
Width Range: 10–500 mm
Edge Finish: Abertura, cuadrado, or rounded according to customer requirements.
5. Key Features of 50CrV4 Alloy Steel Strip
- Excelente strength-to-weight ratio y high fatigue resistance
- Stable spring properties under cyclic stress
- Superior resistencia al desgaste y shock absorption
- Consistent heat treatment response y maquinabilidad
- Uniform flatness achieved through precision levelling and tension control
6. Aplicaciones
50CrV4 alloy steel strips are widely used in industries requiring durability under dynamic loads y controlled elasticity:
- Componentes automotrices
- Leaf springs, discos de embrague, resortes de válvula, and safety parts
- Maquinaria industrial
- Ballestas, discs, and precision washers
- Construction Tools
- Trowels, scrapers, and blades with high flexibility requirements
- Power Transmission
- Flexible couplings and dampening elements
Its combination of strength and toughness also makes it suitable for cold-forming operations prior to hardening and tempering.
7. Tolerances and Quality Control
Jiaxiao MTC follows strict tolerance classes according to DIN/EN standards:
- Tolerancia de grosor: ±0.015–0.070 mm
- Tolerancia de ancho: ±0.20–0.80 mm
- Straightness deviation: within R1–R4 class
- Flatness tolerance: ≤0.1–0.3% of strip width
All coils are tested for:
- Composición química (spectrometer analysis)
- Hardness and tensile strength (Vickers, Rocoso, and Brinell)
- Surface quality and microstructure
8. Embalaje y entrega
Each 50CrV4 coil is lightly oiled y wrapped in anti-rust paper and plastic film, then placed on wooden pallets or into 20ft sea-worthy containers.
Customized packing and labeling available upon request.
9. About Jiaxiao MTC
Guangzhou Jiaxiao Material Technology Co., Limitado.
is a trusted manufacturer and exporter of alto contenido de carbono, aleación, y tiras de acero inoxidable in both recocido y curtido & templado forms.
con más 20 years of experience and advanced facilities for laminación en frío, recocido, temple, and tempering, Jiaxiao MTC provides tailored steel solutions for automotor, primavera, tool, and hardware industries.
