What is 30Cr Steel?
30Cr steel is an alloy steel with alloy steel. This comprehensive guide covers chemical composition, mechanical properties, and machining characteristics per GB/T standards.
Chemical Composition
| Element | Content (%) | Standard |
|---|---|---|
| C | 0.27-0.35 | 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 | ≥735 MPa | GB/T |
| Yield Strength | ≥540 MPa | GB/T |
| Elongation | ≥12% | GB/T |
| Hardness | 205 HV | HV |
| Density | 7.85 g/cm³ | 20°C |
Key Features
- High strength and toughness
- Good hardenability
- Suitable for heat treatment
- Good machinability in annealed condition
- Widely used in automotive and machinery
Applications
- Gear and shaft components
- Automotive parts
- Machine tool components
- High-strength structural parts
Machinability
30Cr steel has good machinability. Recommended: Carbide tools, cutting speed 80-150 m/min, feed 0.15-0.30 mm/rev.
Why Choose Us?
We specialize in precision alloy steel machining. Contact us for a quote!
