China GBT ML20MnTiB China structural steel and alloy steel and ML20MnTiB Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Structure Steel | ML20MnTiB | GBT | China | China structural steel and alloy steel |
ML30CrMo |
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ML35CrMo |
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ML42CrMo |
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ML20B |
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ML28B |
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ML35B |
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ML15MnB⑤ |
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ML20MnB |
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ML35MnB |
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ML37CrB |
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | B(%) | Al(%) | Ti(%) |
---|---|---|---|---|---|---|---|---|
0.19-0.24 | Max 0.30 | 1.30-1.60 | 0.035 | 0.035 | — | 0.0005-0.0035 | 0.02 | 0.04-0.10 |
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) |
---|---|---|---|---|---|---|
949 (≥) | 348 (≥) | 44 | 21 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 122 |
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 |
---|---|---|---|---|---|---|---|
21 | - | - | 0.14 | - | |||
571 | 514 | - | 21.3 | 213 | - | ||
242 | - | 42 | 41.2 | 441 | 422 |
Heat treated : 1424°C - 1976°C
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