China GB GB/T 1221 (1992) , 3Cr18Mn12Si2N Specialsteel Heat-resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 3Cr18Mn12Si2N | Austenite | GB | China | Heat-resisting steel bars | 
| C | Si | Mn | P | S | Cr | N | 
|---|---|---|---|---|---|---|
| 0.22 -0.30 | 1.40 -2.20 | 10.50 -12.50 | ≤0.35 | ≤0.03 | 17.00 -19.00 | 0.22 -0.33 | 
| 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) | 
|---|---|---|---|---|---|---|
| 472 (≥) | 712 (≥) | 11 | 42 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 344 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 32 | - | - | 0.31 | - | |||
| 271 | 912 | - | 22.3 | 121 | - | ||
| 674 | - | 34 | 42.2 | 321 | 332 | 
Heat treated : 1643°C - 1651°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| 0Cr18Ni9 | 
| GB/T 1221 (1992) | Heat-resisting steel bars | GB-T-1221--(1992)--.pdf | 
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