China GBT U20302 China structural steel and alloy steel and U20302 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Structure Steel | U20302 | GBT | China | China structural steel and alloy steel |
65Mn |
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70Mn |
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U20080 |
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U20100 |
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U20150 |
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U20082 |
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U20102 |
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U20152 |
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U20202 |
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U20252 |
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Cu(%) |
---|---|---|---|---|---|---|---|
0.27-0.34 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.3 | 0.25 |
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) |
---|---|---|---|---|---|---|
593 (≥) | 937 (≥) | 12 | 12 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 |
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 | - | - | 0.41 | - | |||
595 | 161 | - | 14.3 | 311 | - | ||
545 | - | 32 | 11.2 | 344 | 124 |
Heat treated : 1757°C - 1984°C
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