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STAM 440 G

Japan JIS STAM440G 汽车结构用电阻焊接碳素钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STAM440G / STAM 440 G
Category Grade Standard Region/Area Standard Content
Metals STAM 440 G JIS G3472 Japan 汽车结构用电阻焊接碳素钢管

Chemical composition(mass fraction)(wt.%) of the STAM 440 G

Element Min Max Similar
S - 0.0350 -
P - 0.0350 -
Mn 0.3000 0.9000 -
Si - 0.3500 -
C - 0.2500 -
Si - 0.3500 -
S - 0.0350 -
P - 0.0350 -
Other - - -
Mn 0.3000 0.9000 -
C - 0.2500 -

Mechanical Properties of steel grade STAM 440 G

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)
314 (≥) 278 (≥) 32 43 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade STAM 440 G

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
34 - -     0.21 -  
737 147 - 21.3 241   -  
331 - 24 32.2   234 123

Heat Treatment of steel grade STAM 440 G

Heat treated : 1312°C - 1624°C

Technological Curves of steel grade STAM 440 G

Cross Reference Table (Equivalent Grade) of STAM 440 G

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