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China 宝钢Q/BQB SHY685 焊接结构用高强度厚钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SHY685 / SHY685
Category Grade Standard Region/Area Standard Content
Metals SHY685 Q/BQB 613 China 焊接结构用高强度厚钢板

Chemical composition(mass fraction)(wt.%) of the SHY685

Element Min Max Similar
C - 0.1800 -
Si - 0.5500 -
Mn - 1.5000 -
P - 0.0300 -
S - 0.0250 -
Cu - 0.5000 -
Cr - 1.2000 -
Mo - 0.6000 -
V - 0.1000 -
B - 0.0050 -

Mechanical Properties of steel grade SHY685

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)
721 (≥) 142 (≥) 41 21 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade SHY685

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 - -     0.13 -  
918 227 - 12.3 134   -  
251 - 31 44.2   312 324

Heat Treatment of steel grade SHY685

Heat treated : 1713°C - 1969°C

Technological Curves of steel grade SHY685

Cross Reference Table (Equivalent Grade) of SHY685

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