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Japan JIS STBA12 锅炉和热交换器用合金钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STBA12 / STBA 12
Category Grade Standard Region/Area Standard Content
Metals STBA 12 JIS G3462 Japan 锅炉和热交换器用合金钢管

Chemical composition(mass fraction)(wt.%) of the STBA 12

Element Min Max Similar
Si 0.1000 0.5000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.4500 0.6500 -
Mn 0.3000 0.8000 -
C 0.1000 0.2000 -

Mechanical Properties of steel grade STBA 12

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)
117 (≥) 118 (≥) 31 24 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade STBA 12

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
13 - -     0.33 -  
472 612 - 11.3 323   -  
812 - 44 31.2   114 442

Heat Treatment of steel grade STBA 12

Heat treated : 1217°C - 1823°C

Technological Curves of steel grade STBA 12

Cross Reference Table (Equivalent Grade) of STBA 12

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