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Japan JIS STBA20 锅炉和热交换器用合金钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STBA20 / STBA 20
Category Grade Standard Region/Area Standard Content
Metals STBA 20 JIS G3462 Japan 锅炉和热交换器用合金钢管

Chemical composition(mass fraction)(wt.%) of the STBA 20

Element Min Max Similar

Mechanical Properties of steel grade STBA 20

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)
642 (≥) 486 (≥) 34 33 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade STBA 20

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
33 - -     0.23 -  
677 594 - 31.3 334   -  
646 - 44 44.2   423 334

Heat Treatment of steel grade STBA 20

Heat treated : 1676°C - 1654°C

Technological Curves of steel grade STBA 20

Cross Reference Table (Equivalent Grade) of STBA 20

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