What is 65Mn?
65Mn is an engineering material with spring steel. This guide covers chemical composition, mechanical properties, and machining per GB/T or ASTM standards.
Chemical Composition
| Element | Content (%) | Standard |
|---|---|---|
| C | 0.62-0.70 | ASTM/GB |
| Mn | 0.50-0.80 | ASTM/GB |
| P | ≤0.035 | ASTM/GB |
| S | ≤0.035 | ASTM/GB |
| Si | 0.17-0.37 | ASTM/GB |
| Fe | Balance | ASTM/GB |
Mechanical Properties
| Property | Value | Standard |
|---|---|---|
| Tensile Strength | ≥900 MPa | ASTM/GB |
| Yield Strength | ≥700 MPa | ASTM/GB |
| Elongation | ≥8% | ASTM/GB |
| Hardness | 280 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
65Mn has good machinability. Recommended: Carbide tools, appropriate cutting parameters, adequate coolant.
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