China GBT Q345GJZ-D China structural steel and alloy steel and Q345GJZ-D Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
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Steel Grades | Structure Steel | Q345GJZ-D | GBT | China | China structural steel and alloy steel |
Q235GJ-C |
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Q235GJ-D |
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Q235GJ-E |
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Q345GJ-C |
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Q345GJ-D |
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Q345GJ-E |
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Q235GJZ-C |
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Q235GJZ-D |
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Q235GJZ-E |
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Q345GJZ-C |
C(%) | Si(%) | Mn(%) | P(%) | S(%) | V(%) | Nb(%) | Al(%) | Ti(%) |
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Max 0.18 | Max 0.55 | Max 0.60 | 0.02 | 0.015 | 0.02-0.15 | 0.015-0.060 | 0.015 | 0.01-0.10 |
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) |
---|---|---|---|---|---|---|
831 (≥) | 893 (≥) | 13 | 12 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 |
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 |
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41 | - | - | 0.34 | - | |||
515 | 726 | - | 31.3 | 443 | - | ||
631 | - | 14 | 12.2 | 434 | 133 |
Heat treated : 1857°C - 1951°C
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