China GBT 4J32 expansionalloy and 4J32 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Special Alloy | 4J32 | GBT | China | expansionalloy | 
| 3J40 | 
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| 3J53 | 
                                |||||
| 3J53P | 
                                |||||
| 3J53Y | 
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| 3J58 | 
                                |||||
| 3J60 | 
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| 3J63 | 
                                |||||
| 4J06 | 
                                |||||
| 4J28 | 
                                |||||
| 4J29 | 
                                
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Ni(%) | Cu(%) | Co(%) | Fe(%) | 
|---|---|---|---|---|---|---|---|---|
| 0.05 | ≤0.20 | 0.20-0.60 | 0.020 | 0.020 | 31.5-33.0 | 0.4-0.8 | 3.2-4.2 | Bal | 
| 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) | 
|---|---|---|---|---|---|---|
| 189 (≥) | 815 (≥) | 41 | 41 | 31 | 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 | 
|---|---|---|---|---|---|---|---|
| 13 | - | - | 0.21 | - | |||
| 947 | 451 | - | 33.3 | 422 | - | ||
| 412 | - | 21 | 11.2 | 341 | 114 | 
Heat treated : 1252°C - 1521°C
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