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Japan JIS STH22 高压气瓶用无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STH22 / STH 22
Category Grade Standard Region/Area Standard Content
Metals STH 22 JIS G3429 Japan 高压气瓶用无缝钢管

Chemical composition(mass fraction)(wt.%) of the STH 22

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mo 0.1500 0.3000 -
Mn 0.4000 0.9000 -
Cr 0.8000 1.2000 -
C 0.3300 0.3800 -

Mechanical Properties of steel grade STH 22

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)
768 (≥) 494 (≥) 43 22 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade STH 22

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
32 - -     0.21 -  
418 599 - 32.3 444   -  
892 - 11 32.2   441 132

Heat Treatment of steel grade STH 22

Heat treated : 1991°C - 1747°C

Technological Curves of steel grade STH 22

Cross Reference Table (Equivalent Grade) of STH 22

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