China GBT 4J58 expansionalloy and 4J58 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
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Steel Grades | Special Alloy | 4J58 | GBT | China | expansionalloy |
4J38 |
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4J40 |
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4J42 |
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4J43 |
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4J44 |
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4J45 |
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4J46 |
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4J47 |
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4J49 |
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4J50 |
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) |
---|---|---|---|---|---|---|
134 (≥) | 528 (≥) | 22 | 43 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 434 |
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 |
---|---|---|---|---|---|---|---|
34 | - | - | 0.43 | - | |||
771 | 892 | - | 22.3 | 112 | - | ||
632 | - | 22 | 31.2 | 323 | 343 |
Heat treated : 1337°C - 1857°C
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