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China 宝钢Q/BQB SHY685NS 焊接结构用高强度厚钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SHY685NS / SHY685NS
Category Grade Standard Region/Area Standard Content
Metals SHY685NS Q/BQB 613 China 焊接结构用高强度厚钢板

Chemical composition(mass fraction)(wt.%) of the SHY685NS

Element Min Max Similar
C - 0.1400 -
Si - 0.5500 -
Mn - 1.5000 -
P - 0.0150 -
S - 0.0150 -
Cu - 0.5000 -
Ni 0.3000 1.5000 -
Cr - 0.8000 -
Mo - 0.6000 -
V - 0.0500 -
B - 0.0050 -

Mechanical Properties of steel grade SHY685NS

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)
898 (≥) 294 (≥) 12 23 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade SHY685NS

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
42 - -     0.22 -  
249 963 - 32.3 342   -  
977 - 12 42.2   141 211

Heat Treatment of steel grade SHY685NS

Heat treated : 1233°C - 1713°C

Technological Curves of steel grade SHY685NS

Cross Reference Table (Equivalent Grade) of SHY685NS

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