What is HT250?
HT250 is an engineering material with gray cast iron. This guide covers chemical composition, mechanical properties, and machining per GB/T or ASTM standards.
Chemical Composition
| Element | Content (%) | Standard |
|---|---|---|
| C | 0.47-0.55 | 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 | ≥300 MPa | ASTM/GB |
| Yield Strength | ≥200 MPa | ASTM/GB |
| Elongation | ≥5% | ASTM/GB |
| Hardness | 200 HV | HV |
| Density | 7.20 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
HT250 has good machinability. Recommended: Carbide tools, appropriate cutting parameters, adequate coolant.
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