25CrMo Steel
25CrMo steel is a kind of Chinese alloy steel for engineering and mechanical structure use, for properies and uses, please refer to 20CrMo and 30CrMo. For specification, chemical composition, mechanical properties and equivalent, please see the following tables.
Datasheet
25CrMo Steel Chemical Composition
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | Cu |
| 25CrMo | 0.22 to 0.29 | 0.17 to 0.37 | 0.60 to 0.90 | ≤ 0.030 | ≤ 0.030 | 0.90 to 1.20 | 0.15 to 0.30 | ≤ 0.30 |
25CrMo Alloy Steel Mechanical Properties
- Yield strength: ≥ 600 MPa
- Tensile strength: ≥ 900 MPa
- Elongation: ≥14%
- Rate of reduction in area: ≥55%
- Impact absorbing energy: ≥ 68 J
- Material Brinell hardness: ≤ 229 (Annealed or high temperature tempered steel rod)
- Sample size: 25mm
Heat treatment specification
- First quenching heating temperature: 870 °C (Coolant: water, oil)
- Tempering heating temperature: 600 °C (Coolant: water, oil)
Equivalents
25CrMo material equivalent to US ASTM, European Germany DIN EN, British BS EN, France NF EN, and Japanese JIS standard. (For reference)
| 25CrMo steel equivalent | |||||||||||
| China | USA | Germany | UK | Japan | France | ||||||
| Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade |
| GB/T 3077 | 25CrMo | AISI SAE; ASTM A29/A29M |
4130 | DIN EN 10083-3 | 25CrMo4 | BS EN 10083-3 | 25CrMo4 | JIS G4053 | SCM430 | NF EN 10083-3 | 25CrMo4 |
