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China 武钢Q/WG HG785D 高强度焊接结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HG785D / HG785D
Category Grade Standard Region/Area Standard Content
Metals HG785D -- China 高强度焊接结构钢

Chemical composition(mass fraction)(wt.%) of the HG785D

Element Min Max Similar
C - 0.1200 -
Si - 0.4000 -
Mn - 1.8000 -
P - 0.0250 -
S - 0.0150 -
Ni - 0.7500 -
Cr - 0.7000 -
Mo - 0.5000 -
Nb - 0.0600 -
Ti - 0.0200 -
B - 0.0220 -

Mechanical Properties of steel grade HG785D

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)
563 (≥) 549 (≥) 24 31 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade HG785D

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
22 - -     0.14 -  
545 237 - 42.3 142   -  
274 - 22 23.2   312 243

Heat Treatment of steel grade HG785D

Heat treated : 1166°C - 1294°C

Technological Curves of steel grade HG785D

Cross Reference Table (Equivalent Grade) of HG785D

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