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China 首钢Q/SG St44-3G 冷轧碳素结构钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St44-3G / St44-3G
Category Grade Standard Region/Area Standard Content
Metals St44-3G Q/SGZGS 325 China 冷轧碳素结构钢板及钢带

Chemical composition(mass fraction)(wt.%) of the St44-3G

Element Min Max Similar
C - 0.2000 -
Mn - 1.3000 -
P - 0.0300 -
S - 0.0250 -
Alt 0.0150 - -
C - 0.2000 -
Mn - 1.3000 -
P - 0.0350 -
S - 0.0300 -
Alt 0.0200 - -

Mechanical Properties of steel grade St44-3G

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)
497 (≥) 391 (≥) 41 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade St44-3G

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 - -     0.42 -  
678 974 - 34.3 324   -  
869 - 32 11.2   231 333

Heat Treatment of steel grade St44-3G

Heat treated : 1964°C - 1625°C

Technological Curves of steel grade St44-3G

Cross Reference Table (Equivalent Grade) of St44-3G

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