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China GB QU80 起重机钢轨 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: QU80 / QU80
Category Grade Standard Region/Area Standard Content
Metals QU80 GB 3426 China 起重机钢轨

Chemical composition(mass fraction)(wt.%) of the QU80

Element Min Max Similar

Mechanical Properties of steel grade QU80

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)
241 (≥) 374 (≥) 24 11 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade QU80

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
41 - -     0.44 -  
869 396 - 42.3 141   -  
321 - 41 42.2   443 224

Heat Treatment of steel grade QU80

Heat treated : 1976°C - 1483°C

Technological Curves of steel grade QU80

Cross Reference Table (Equivalent Grade) of QU80

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