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STAM 440 H

Japan JIS STAM440H 汽车结构用电阻焊接碳素钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STAM440H / STAM 440 H
Category Grade Standard Region/Area Standard Content
Metals STAM 440 H 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 H

Element Min Max Similar

Mechanical Properties of steel grade STAM 440 H

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)
255 (≥) 651 (≥) 41 32 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade STAM 440 H

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
11 - -     0.32 -  
438 493 - 43.3 222   -  
291 - 32 23.2   211 123

Heat Treatment of steel grade STAM 440 H

Heat treated : 1668°C - 1163°C

Technological Curves of steel grade STAM 440 H

Cross Reference Table (Equivalent Grade) of STAM 440 H

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