25CrMo steel
25CrMo steel is a type of Chinese alloy steel for use in engineering and mechanical structure. For properties and uses, see 20CrMo and 30CrMo. For specifications, chemical composition, mechanical properties and equivalents, see the following tables.
data sheet
Chemical Composition of 25CrMo Steel
| Steel Grade | W | Yes | Mn | P | s | Cr | Mo | Ass |
| 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 |
Mechanical Properties of 25CrMo Alloy Steel
- Yield strength: ≥ 600 MPa
- Tensile strength: ≥ 900 MPa
- Elongation: ≥14%
- Area reduction rate: ≥55%
- Impact absorption energy: ≥ 68 J
- Material Brinell hardness: ≤ 229 (high temperature annealed or quenched steel rod)
- Sample size: 25mm
Heat Treatment Specification
- First quenching heating temperature: 870°C (Coolant: water, oil)
- Quenching heating temperature: 600°C (coolant: water, oil)
Equivalents
25CrMo material equivalent to US ASTM, European German DIN EN, British BS EN, French NF EN and Japanese JIS standard. (For reference)
| 25CrMo steel equivalent | |||||||||||
| China | USA | Germany | UK | Japan | France | ||||||
| Standard | Note | Standard | Note | Standard | Note | Standard | Note | Standard | Note | Standard | Note |
| GB/T 3077 | 25CrMo | AISI-SAE; ASTM A29/A29M |
4130 | DIN EN 10083-3 | 25CrMo4 | EN 10083-3 | 25CrMo4 | JIS G4053 | SCM430 | NF EN 10083-3 | 25CrMo4 |
