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SA-250 Grade T 1b

America ASME SA-250GradeT1b 锅炉和过热器管用电通电阻焊接铁素体合金钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SA-250GradeT1b / SA-250 Grade T 1b
Category Grade Standard Region/Area Standard Content
Metals SA-250 Grade T 1b ASME SA-250/SA-250M America 锅炉和过热器管用电通电阻焊接铁素体合金钢

Chemical composition(mass fraction)(wt.%) of the SA-250 Grade T 1b

Element Min Max Similar
Si 0.1000 0.5000 -
S - 0.0450 -
P - 0.0450 -
Mo 0.4400 0.6500 -
Mn 0.3000 0.8000 -
C - 0.1400 -

Mechanical Properties of steel grade SA-250 Grade T 1b

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)
923 (≥) 753 (≥) 24 12 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade SA-250 Grade T 1b

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
24 - -     0.11 -  
386 889 - 44.3 331   -  
137 - 22 34.2   131 121

Heat Treatment of steel grade SA-250 Grade T 1b

Heat treated : 1382°C - 1245°C

Technological Curves of steel grade SA-250 Grade T 1b

Cross Reference Table (Equivalent Grade) of SA-250 Grade T 1b

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