China GBT U21302 China structural steel and alloy steel and U21302 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Structure Steel | U21302 | GBT | China | China structural steel and alloy steel |
U20552 |
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U20602 |
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U20652 |
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U20702 |
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U20752 |
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U20802 |
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U20852 |
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U21152 |
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U21202 |
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U21252 |
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Cu(%) |
---|---|---|---|---|---|---|---|
0.27-0.34 | 0.17-0.37 | 0.70-1.00 | 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) |
---|---|---|---|---|---|---|
154 (≥) | 281 (≥) | 31 | 12 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 232 |
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 |
---|---|---|---|---|---|---|---|
31 | - | - | 0.22 | - | |||
469 | 794 | - | 34.3 | 113 | - | ||
295 | - | 21 | 43.2 | 144 | 231 |
Heat treated : 1432°C - 1175°C
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