C70 Steel
Home / C70 Steel
Products
Special Steels Division
Wire Division
Product Description:
C70 steel is a high-carbon steel with a carbon content of approximately 0.70%, known for its excellent hardness, wear resistance, and strength. This steel is primarily used in applications where high wear resistance and hardness are required, such as in the production of cutting tools, springs, and high-stress mechanical components. C70 is a non-alloy steel, which means it does not contain significant amounts of other alloying elements, but it can be heat-treated to enhance its properties.
Features:
- Good High Hardness: The high carbon content of C70 steel allows it to be heat-treated to achieve high levels of hardness, which is critical for applications involving abrasion and wear.
- Good Wear Resistance: After proper heat treatment, C70 steel exhibits excellent wear resistance, making it ideal for parts that experience high friction.
- High Strength: C70 steel provides high tensile strength, making it suitable for applications that require strength under stress.
- Heat Treatable: C70 can be heat-treated to increase its hardness and mechanical properties, particularly for use in tools and high-stress components.
- Excellent Toughness: Even with high hardness, C70 steel maintains good toughness, which helps prevent brittle fracture under high impact conditions.
Specifications:
- DIN 17200: German standard for unalloyed steel, which includes C70 for various industrial applications.
- EN 10083-2: European standard for heat-treated steels, which applies to C70.
- UNS G10500: The Unified Numbering System (UNS) designation for C70 steel.
- ISO 683-2: International standard for heat-treated steels, including C70 for mechanical components..
Composition of C70 Steel:
Element | Percentage |
---|---|
Carbon (C) | 0.67 – 0.75% |
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) | 190-210 HB (annealed) |
Tensile Strength | 850-1000 MPa (123,000-145,000 psi) |
Yield Strength | 600-800 MPa (87,000-116,000 psi) |
Elongation | 12-15% |
Modulus of Elasticity | 210 GPa |
Thermal Conductivity | 48 W/m·K |
Coefficient of Thermal Expansion | 11.5 × 10⁻⁶ /°C |