China GB GB/T 1221 (1992) , 2Cr12MoVNbN Specialsteel Heat-resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 2Cr12MoVNbN | Martensite | GB | China | Heat-resisting steel bars | 
| C | Si | Mn | P | S | Ni | Cr | Mo | Nb | V | N | 
|---|---|---|---|---|---|---|---|---|---|---|
| 0.15 -0.20 | ≤0.50 | 0.50 -1.00 | ≤0.035 | ≤0.030 | ≤0.60 | 10.00 -13.00 | 0.30 -0.90 | 0.20 -0.60 | 0.10 -0.40 | 0.05 -0.10 | 
| 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) | 
|---|---|---|---|---|---|---|
| 935 (≥) | 395 (≥) | 32 | 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 | - | - | 0.14 | - | |||
| 692 | 195 | - | 13.3 | 112 | - | ||
| 969 | - | 41 | 34.2 | 341 | 424 | 
Heat treated : 1152°C - 1582°C
| GB/T 1221 (1992) | Heat-resisting steel bars | GB-T-1221--(1992)-.pdf | 
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