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A731 Grade Type XM-27

America ASTM A731GradeTypeXM-27 无缝及焊接铁素体和马氏体不锈钢公称管 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals A731 Grade Type XM-27 ASTM A731/A731M America 无缝及焊接铁素体和马氏体不锈钢公称管

Chemical composition(mass fraction)(wt.%) of the A731 Grade Type XM-27

Element Min Max Similar
Si - 0.4000 -
S - 0.0200 -
P - 0.0200 -
Ni+Cu - 0.5000 -
N - 0.0150 -
Mo 0.7500 1.5000 -
Mn - 0.4000 -
Cu - 0.2000 -
Cr 25.0000 27.5000 -
Cb 0.0500 0.2000 -
C - 0.0100 -

Mechanical Properties of steel grade A731 Grade Type XM-27

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)
762 (≥) 997 (≥) 21 23 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade A731 Grade Type XM-27

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
34 - -     0.34 -  
718 376 - 33.3 124   -  
823 - 43 11.2   144 431

Heat Treatment of steel grade A731 Grade Type XM-27

Heat treated : 1258°C - 1144°C

Technological Curves of steel grade A731 Grade Type XM-27

Cross Reference Table (Equivalent Grade) of A731 Grade Type XM-27

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