What is GCr9?
GCr9 is an engineering material with bearing steel. This guide covers chemical composition, mechanical properties, and machining per GB/T or ASTM standards.
Chemical Composition
| Element | Content (%) | Standard |
|---|---|---|
| C | 0.95-1.10 | GB/T or ASTM |
| Cr | 1.40-1.65 | GB/T or ASTM |
| Mn | 0.25-0.45 | GB/T or ASTM |
| Si | 0.15-0.35 | GB/T or ASTM |
Mechanical Properties
| Property | Value | Standard |
|---|---|---|
| Tensile Strength | ≥800 MPa | ASTM/GB |
| Yield Strength | ≥600 MPa | ASTM/GB |
| Elongation | ≥10% | ASTM/GB |
| Hardness | 250 HV | HV |
| Density | 7.85 g/cm³ | 20°C |
Key Features
- Good mechanical properties
- Suitable for industrial applications
- Good machinability
- Cost-effective
Applications
- Industrial components
- Automotive parts
- Machine tool components
- Structural applications
Machinability
GCr9 has good machinability. Recommended: Carbide tools, appropriate cutting parameters, adequate coolant.
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