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China 首钢Q/SG GHS-70 焊丝用钢盘条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GHS-70 / GHS-70
Category Grade Standard Region/Area Standard Content
Metals GHS-70 Q/SGZGS 0294 China 焊丝用钢盘条

Chemical composition(mass fraction)(wt.%) of the GHS-70

Element Min Max Similar
C - 0.1000 -
Si 0.5000 0.8000 -
Mn 1.4000 1.8000 -
P - 0.0250 -
S - 0.0250 -
Cr 0.1500 0.7000 -
Ni 1.0000 1.7000 -
Mo 0.3000 0.6000 -

Mechanical Properties of steel grade GHS-70

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)
477 (≥) 159 (≥) 43 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade GHS-70

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
13 - -     0.24 -  
198 679 - 24.3 342   -  
777 - 23 24.2   433 311

Heat Treatment of steel grade GHS-70

Heat treated : 1838°C - 1271°C

Technological Curves of steel grade GHS-70

Cross Reference Table (Equivalent Grade) of GHS-70

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