C50 Steel (UNS G10500)
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Overview of C50 Steel (DIN 17200, EN 10083-2, ISO 683-2):
C50 is a medium carbon steel (with a carbon content of approximately 0.50%) that is widely used in the manufacturing of mechanical and structural components requiring moderate strength, hardness, and wear resistance. It is a non-alloy steel that can be heat-treated to improve its mechanical properties. The steel is commonly used in industries like automotive, machinery, and construction for parts such as shafts, gears, axles, and other mechanical components.
Features:
- Good Strength and Hardness: C45 is suitable for parts requiring a balance of hardness and toughness, achieving good strength after heat treatment.
- Excellent Machinability: It offers good machinability in both its annealed and hardened states
- Heat Treatment Capability: It can be heat treated to increase its mechanical properties, including tensile strength, hardness, and wear resistance.
- Versatile: It is used for a wide range of applications, from structural components to mechanical parts and automotive parts.
- Good Toughness: C45 steel retains good toughness, which makes it suitable for applications subject to impact.
Specifications:
- DIN 17200: A German standard for steel grades, which includes C50 steel for mechanical applications.
- EN 10083-2: European standard for steel used in quenching and tempering, applicable to C50.
- UNS G10500: The Unified Numbering System (UNS) designation for C50 steel.
- ISO 683-2: International standard for heat-treated steels, which includes C50 for various mechanical applications.
Composition of C50 Steel:
| Element | Percentage |
|---|---|
| Carbon (C) | 0.47 – 0.55% |
| Manganese (Mn) | 0.60 – 0.90% |
| Silicon (Si) | 0.10 – 0.35% |
| Phosphorus (P) | 0.035% Max |
| Sulfur (S) | 0.035% Max |
| Iron (Fe) | Balance |
Physical Properties:
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1450°C (2642°F) |
| Hardness (Brinell) | 170-210 HB (annealed) |
| Tensile Strength | 600-900 MPa (87,000-130,000 psi) |
| Yield Strength | 350-700 MPa (51,000-101,000 psi) |
| Elongation | 16-20% |
| Modulus of Elasticity | 210 GPa |
| Thermal Conductivity | 48 W/m·K |
| Coefficient of Thermal Expansion | 11.5 × 10⁻⁶ /°C |