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) |
---|---|---|---|---|---|---|
287 (≥) | 624 (≥) | 33 | 14 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 111 |
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 |
---|---|---|---|---|---|---|---|
42 | - | - | 0.33 | - | |||
838 | 963 | - | 23.3 | 341 | - | ||
882 | - | 42 | 31.2 | 222 | 424 |
Heat treated : 1319°C - 1673°C
GB/T 1221 (1992) | Heat-resisting steel bars | GB-T-1221--(1992)-.pdf |
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