China GB GB 4238 (1992) , GB/T 1221 (1992) , 1Cr25Ni20Si2 Specialsteel Heat-resisting steel sheets and plates and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | 1Cr25Ni20Si2 | Austenite | GB | China | Heat-resisting steel sheets and plates |
C | S | Mn | P | S | Ni | Cr |
---|---|---|---|---|---|---|
≤0.20 | 1.50 -2.50 | ≤1.50 | ≤0.035 | ≤0.030 | 18.00 -21.00 | 24.00 -27.00 |
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) |
---|---|---|---|---|---|---|
195 (≥) | 597 (≥) | 41 | 12 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 342 |
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 |
---|---|---|---|---|---|---|---|
23 | - | - | 0.41 | - | |||
823 | 459 | - | 14.3 | 411 | - | ||
549 | - | 33 | 42.2 | 424 | 223 |
Heat treated : 1699°C - 1198°C
GB 4238 (1992) | Heat-resisting steel sheets and plates | GB-4238--(1992)-.pdf |
GB/T 1221 (1992) | Heat-resisting steel bars | GB-T-1221--(1992)--.pdf |
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