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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)
955 (≥) 829 (≥) 12 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

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
22 - -     0.34 -  
832 859 - 43.3 433   -  
592 - 14 11.2   422 443

Heat Treatment of steel grade STH 22

Heat treated : 1836°C - 1235°C

Technological Curves of steel grade STH 22

Cross Reference Table (Equivalent Grade) of STH 22

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