China GB GB/T 1221 (1992), 2Cr20Mn9Ni2Si2N Specialsteel Heat-resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | 2Cr20Mn9Ni2Si2N | Austenite | GB | China | Heat-resisting steel bars |
C | Si | Mn | P | S | Ni | Cr | N |
---|---|---|---|---|---|---|---|
0.17 -0.26 | 1.80 -2.70 | 8.50 -11.00 | ≤0.35 | ≤0.03 | 2.00 -3.00 | 18.00 -21.00 | 0.20 -0.30 |
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) |
---|---|---|---|---|---|---|
613 (≥) | 618 (≥) | 14 | 32 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 333 |
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 |
---|---|---|---|---|---|---|---|
13 | - | - | 0.24 | - | |||
418 | 768 | - | 34.3 | 443 | - | ||
165 | - | 41 | 22.2 | 121 | 331 |
Heat treated : 1149°C - 1549°C
GB/T 1221 (1992) | Heat-resisting steel bars | GB-T-1221--(1992).pdf |
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