40Cr is a widely used alloy structural steel with good hardenability and strength after heat treatment. It is commonly used for shafts, gears, and bolts.
40Cr
Alloy structural steel for shafts, gears, bolts, and general mechanical parts.
40Cr is a widely used alloy structural steel with good hardenability and strength after heat treatment.
Key pointGood hardenability and stable strength after heat treatment.
Commonly used for mechanical parts, transmission shafts, and gear components.
Product Summary
Balanced alloy steel for common industrial parts.
The grade suits customers who need a practical structural steel with predictable heat-treatment response and broad machining use.
| GB | 40Cr |
|---|---|
| DIN | 41Cr4 |
| JIS | SCr440 |
| C | 0.37 - 0.44 |
|---|---|
| Si | 0.17 - 0.37 |
| Mn | 0.50 - 0.80 |
| Cr | 0.80 - 1.10 |
| Tensile strength | ≥ 800 MPa |
|---|---|
| Yield strength | ≥ 540 MPa |
| Diameter | 20 - 300 mm |
|---|---|
| Length | 3 - 12 m |
| Condition | Annealed / QT |
- Transmission shafts
- Gear components
- Mechanical parts
- Automotive components
- Hot rolled or forged supply
- Heat-treatment support
- Rough machining and finish machining
- Surface treatment on request
- Chemical check
- Mechanical testing
- Ultrasonic testing available
- Dimensional inspection
Inquiry
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