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China YB QS77Mn 桥梁缆索钢丝用热轧盘条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: QS77Mn / QS77Mn
Category Grade Standard Region/Area Standard Content
Metals QS77Mn YB/T 4264 China 桥梁缆索钢丝用热轧盘条

Chemical composition(mass fraction)(wt.%) of the QS77Mn

Element Min Max Similar
Cu - 0.2000 -
Cr - 0.2000 -
S - 0.0250 -
P - 0.0200 -
Mn 0.6000 0.9000 -
Si 0.1200 0.3200 -
C 0.7500 0.8000 -

Mechanical Properties of steel grade QS77Mn

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)
976 (≥) 715 (≥) 22 21 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade QS77Mn

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
14 - -     0.24 -  
727 599 - 42.3 421   -  
221 - 33 43.2   423 134

Heat Treatment of steel grade QS77Mn

Heat treated : 1668°C - 1649°C

Technological Curves of steel grade QS77Mn

Cross Reference Table (Equivalent Grade) of QS77Mn

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