Description
50CrV4 Alloy Steel Overview
50CrV4 is a high-strength alloy steel known for its excellent hardness, wear resistance, and overall toughness. It is commonly used in applications that require high mechanical properties and durability under stress. The addition of chromium and vanadium enhances the steel’s performance, making it suitable for a range of demanding applications.
Key Features of 50CrV4:
- High Strength: Offers excellent load-bearing capacity.
- Enhanced Toughness: Provides resistance to impact and shock loading.
- Superior Wear Resistance: Chromium and vanadium improve resistance to wear and abrasion.
- Good Hardness: Maintains hardness even under high-stress conditions.
Applications of 50CrV4 Alloy Steel
50CrV4 is used in various industries where high strength and wear resistance are critical. Typical applications include:
- Automotive Industry: Components such as crankshafts, gears, and suspension parts that require high strength and durability.
- Engineering: Parts like shafts, springs, and forgings used in high-stress environments.
- Heavy Machinery: Components subjected to heavy loads and abrasive conditions, such as earth-moving equipment and mining machinery.
- Tooling: Parts used in tools and dies that require high wear resistance and toughness.
Equivalent Grades for 50CrV4
50CrV4 is recognized under various international standards, ensuring compatibility and interchangeability:
| Standard | Equivalent Grade |
|---|---|
| DIN | 1.8550 |
| BS | 50CrV4 |
| AISI/SAE | 5150 |
| UNS | G51500 |
| JIS | SUP10 |
Chemical Composition of 50CrV4
The chemical composition of 50CrV4 contributes to its unique properties. The typical composition is as follows:
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.48 – 0.55 |
| Silicon (Si) | 0.15 – 0.35 |
| Manganese (Mn) | 0.50 – 0.80 |
| Chromium (Cr) | 0.90 – 1.20 |
| Vanadium (V) | 0.10 – 0.20 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
Mechanical Properties of 50CrV4
The mechanical properties of 50CrV4 make it suitable for applications requiring high strength and durability:
| Property | Value (Typical) |
|---|---|
| Tensile Strength (MPa) | 850 – 1100 |
| Yield Strength (MPa) | 650 – 850 |
| Elongation (%) | 12 – 18 |
| Impact Toughness (J) | 30 – 50 (at 20°C) |
| Hardness (HB) | 250 – 300 |
Heat Treatment of 50CrV4
Heat treatment processes are crucial for optimizing the properties of 50CrV4:
- Annealing: Heat to 850-880°C, hold until uniform, and cool slowly to improve machinability and relieve internal stresses.
- Hardening: Heat to 820-880°C, followed by quenching in oil or water to increase hardness and strength.
- Tempering: After hardening, temper at 400-650°C to reduce brittleness and enhance toughness.
Hardness of 50CrV4
In its hardened and tempered condition, 50CrV4 typically exhibits a hardness range of 250 – 300 HB, providing a balance between hardness and toughness.
Physical Properties of 50CrV4
The physical properties of 50CrV4 contribute to its suitability for various applications:
| Property | Value |
|---|---|
| Density (g/cm³) | 7.85 |
| Melting Point (°C) | 1420 – 1460 |
| Thermal Conductivity (W/m·K) | 42 |
| Specific Heat Capacity (J/kg·K) | 460 |
Forging Properties of 50CrV4
50CrV4 can be forged at temperatures between 1150 – 850°C. Components should be cooled slowly to avoid internal stresses and potential cracking.
Stress Relieving for 50CrV4
To remove residual stresses from machining or deformation, stress relieving should be performed by heating to 650 – 700°C, holding for a sufficient period, and then cooling slowly.
Normalizing 50CrV4
Normalizing involves heating to 850 – 880°C and air cooling. This process refines the grain structure and improves mechanical properties.
Annealing 50CrV4
Annealing requires heating to 850 – 880°C, holding at this temperature, and then slowly cooling in the furnace. This treatment improves machinability and relieves internal stresses.
Machinability of 50CrV4
50CrV4 exhibits good machinability in the normalized or annealed condition. For optimal results, use sharp cutting tools and appropriate machining parameters to enhance tool life and surface finish.
Welding of 50CrV4
Welding of 50CrV4 is feasible but requires careful handling. Preheat to 150 – 250°C to prevent cracking, and consider post-weld heat treatment to ensure the integrity of the weld.
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Mumbai Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai, Chittoor, Coimbatore, Dindigul, Mysore, Nellore, Hyderabad, Kochi, Mangalore, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Tamil Nadu, Telangana, Visakhapatnam, Kochi, Kerala, Hubli-Dharwad, Karnataka, Ghaziabad Kolkata.
