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Japan JIS STFA22 明火加热炉用钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STFA22 / STFA 22
Category Grade Standard Region/Area Standard Content
Metals STFA 22 JIS G3467 Japan 明火加热炉用钢管

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

Element Min Max Similar

Mechanical Properties of steel grade STFA 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)
645 (≥) 663 (≥) 41 21 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade STFA 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 - -     0.33 -  
784 593 - 32.3 423   -  
691 - 13 42.2   234 431

Heat Treatment of steel grade STFA 22

Heat treated : 1441°C - 1749°C

Technological Curves of steel grade STFA 22

Cross Reference Table (Equivalent Grade) of STFA 22

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