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China 首钢Q/SG H08SG 焊丝用钢盘条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: H08SG / H08SG
Category Grade Standard Region/Area Standard Content
Metals H08SG Q/SGZGS 0294 China 焊丝用钢盘条

Chemical composition(mass fraction)(wt.%) of the H08SG

Element Min Max Similar
C 0.0400 0.1000 -
Si - 0.3000 -
Mn 1.4000 1.7000 -
P - 0.0100 -
S - 0.0080 -
Mo 0.3000 0.5000 -
Ti 0.0300 0.0900 -
B 0.0020 0.0070 -

Mechanical Properties of steel grade H08SG

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)
615 (≥) 455 (≥) 22 44 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade H08SG

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
12 - -     0.22 -  
268 639 - 31.3 313   -  
843 - 12 43.2   313 333

Heat Treatment of steel grade H08SG

Heat treated : 1919°C - 1838°C

Technological Curves of steel grade H08SG

Cross Reference Table (Equivalent Grade) of H08SG

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