China GBT G20Cr2Mn2Mo China structural steel and alloy steel and G20Cr2Mn2Mo Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Structure Steel | G20Cr2Mn2Mo | GBT | China | China structural steel and alloy steel | 
| GCr4 | |||||
| GCr15 | |||||
| GCr15SiMn | |||||
| GCr15SiMo | |||||
| GCr18Mo | |||||
| G20CrMo | |||||
| G20CrNiMo | |||||
| G20CrNi2Mo | |||||
| G20Cr2Ni4 | |||||
| G10CrNi3Mo | 
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Mo(%) | Cu(%) | 
|---|---|---|---|---|---|---|---|---|
| 0.17-0.23 | 0.15-0.40 | 1.30-1.60 | 0.03 | 0.03 | 1.70-2.00 | Max 0.30 | 0.20-0.30 | Max 0.25 | 
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 865 (≥) | 756 (≥) | 41 | 42 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 244 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 44 | - | - | 0.41 | - | |||
| 164 | 972 | - | 24.3 | 311 | - | ||
| 436 | - | 14 | 32.2 | 133 | 134 | 
Heat treated : 1677°C - 1556°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| G20Cr2Mn2Mo | GBT | China | China structural steel and alloy steel | 
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