C ：1.00-1.10
Mn：0.25-0.45 Mo:≤0.08 S：≤0.025 Cu：≤0.25
YieldRp0.2 (MPa) | TensileRm (MPa) | ImpactKV/Ku (J) | ElongationA (%) | Reduction in cross section on fractureZ (%) | As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
477 (≥) | 723 (≥) | 23 | 44 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 144 |
GB GCr9 GB/T 18254 Physical
Physical properties of GB GCr9 GB/T 18254 are mainly indicated by modulus of electrical resistance value, thermal conductivity, specific thermal capacity, coefficient of thermal expansion, elasticity, poisson's ratio, density, etc.
| Temperature (°C) | Modulus of elasticity (GPa) | Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) | Specific thermal capacity (J/kg·°C) | Specific electrical resistivity (Ω mm²/m) | Density (kg/dm³) | Poisson’s coefficient, ν |
|---|---|---|---|---|---|---|---|
| 31 | - | - | 0.14 | - | |||
| 786 | 283 | - | 41.3 | 133 | - | ||
| 753 | - | 12 | 14.2 | 112 | 441 |
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Tom ntej: 17CrMnNiMo Bearing Steel
