China GB GB/T 1221 (1992) , 2Cr12NiMoWV Specialsteel Heat-resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | 2Cr12NiMoWV | Martensite | GB | China | Heat-resisting steel bars |
C | Si | Mn | P | S | Ni | Cr | Mo | W | V |
---|---|---|---|---|---|---|---|---|---|
0.20 -0.25 | ≤0.50 | 0.50 -1.00 | ≤0.035 | ≤0.030 | 0.50 -1.00 | 11.00 -13.00 | 0.75 -1.25 | 0.70 -1.25 | 0.20 -0.40 |
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) |
---|---|---|---|---|---|---|
735 (≥) | 418 (≥) | 22 | 24 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 314 |
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 |
---|---|---|---|---|---|---|---|
12 | - | - | 0.13 | - | |||
994 | 543 | - | 31.3 | 234 | - | ||
212 | - | 42 | 44.2 | 413 | 441 |
Heat treated : 1724°C - 1584°C
GB/T 1221 (1992) | Heat-resisting steel bars | GB-T-1221--(1992)-.pdf |
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