30KHGSA
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Product Description:
30KHGSA is a high-alloy steel primarily used for manufacturing components that require high strength, toughness, and resistance to wear. It is a low-alloy steel that contains a combination of carbon, chromium, nickel, and other elements, giving it excellent mechanical properties. This steel is often used in applications that require high hardness, toughness, and the ability to withstand harsh operating conditions, including components for machinery, automotive, and structural applications.
Features:
- High Strength: The steel provides excellent tensile strength, making it ideal for components that need to withstand high loads and stresses.
- Good Toughness: It has good toughness, which helps the steel maintain its integrity under impact loading and at low temperatures.
- Excellent Wear Resistance: The alloy’s composition offers good resistance to wear, making it suitable for high-friction applications such as gears and bearings.
- Good Hardenability: 30KHGSA has excellent hardenability, allowing it to achieve high hardness levels even in thicker sections after heat treatment.
- Fatigue Resistance: The steel offers good resistance to fatigue, making it ideal for components subjected to repeated loading and unloading.
- Impact Resistance: The alloy offers a high degree of resistance to impact and shock loading, making it suitable for demanding mechanical applications.
Specifications:
- GOST 4543-71 (Russia): A standard for steels used in the Russian industry that includes 30KHGSA, outlining its mechanical properties and applications.
- ISO 683-1: The international standard covering steel used for manufacturing components subjected to high stresses, including 30KHGSA steel.
Composition of 30KHGSA Steel:
| Element | Percentage |
|---|---|
| Carbon (C) | 0.28 – 0.35% |
| Manganese (Mn) | 0.40 – 0.80% |
| Chromium (Cr) | 0.80 – 1.10% |
| Nickel (Ni) | 1.50 – 2.00% |
| Silicon (Si) | 0.15 – 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 | 1425°C (2597°F) |
| Hardness (Brinell) | 200-250 HB |
| Tensile Strength | 800-1000 MPa (116,000-145,000 psi) |
| Yield Strength | 600-800 MPa (87,000-116,000 psi) |
| Elongation | 12-18% |
| Modulus of Elasticity | 210 GPa |
| Thermal Conductivity | 46 W/m·K |
| Coefficient of Thermal Expansion | 11.5 × 10⁻⁶ /°C |