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China 宝钢Q/BQB SHY685N 焊接结构用高强度厚钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SHY685N / SHY685N
Category Grade Standard Region/Area Standard Content
Metals SHY685N Q/BQB 613 China 焊接结构用高强度厚钢板

Chemical composition(mass fraction)(wt.%) of the SHY685N

Element Min Max Similar
C - 0.1800 -
Si - 0.5500 -
Mn - 1.5000 -
P - 0.0300 -
S - 0.0250 -
Cu - 0.5000 -
Ni 0.3000 1.5000 -
Cr - 0.8000 -
Mo - 0.6000 -
V - 0.1000 -
B - 0.0050 -

Mechanical Properties of steel grade SHY685N

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)
111 (≥) 521 (≥) 32 33 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade SHY685N

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 - -     0.11 -  
264 224 - 44.3 333   -  
539 - 23 21.2   411 422

Heat Treatment of steel grade SHY685N

Heat treated : 1911°C - 1949°C

Technological Curves of steel grade SHY685N

Cross Reference Table (Equivalent Grade) of SHY685N

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