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China 首钢Q/SG S245G 冷轧碳素结构钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S245G / S245G
Category Grade Standard Region/Area Standard Content
Metals S245G Q/SGZGS 325 China 冷轧碳素结构钢板及钢带

Chemical composition(mass fraction)(wt.%) of the S245G

Element Min Max Similar
C - 0.2000 -
Mn - 1.3000 -
P - 0.0300 -
S - 0.0250 -
Alt 0.0150 - -

Mechanical Properties of steel grade S245G

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)
932 (≥) 293 (≥) 22 21 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade S245G

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 - -     0.44 -  
667 251 - 22.3 242   -  
281 - 32 32.2   332 141

Heat Treatment of steel grade S245G

Heat treated : 1953°C - 1973°C

Technological Curves of steel grade S245G

Cross Reference Table (Equivalent Grade) of S245G

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