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A240 XM-27

America ASTM A240XM-27 压力容器用耐热铬和铬镍不锈钢厚板、薄板和带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A240XM-27 / A240 XM-27
Category Grade Standard Region/Area Standard Content
Metals A240 XM-27 ASTM A240/A240M America 压力容器用耐热铬和铬镍不锈钢厚板、薄板和带

Chemical composition(mass fraction)(wt.%) of the A240 XM-27

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

Mechanical Properties of steel grade A240 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)
763 (≥) 391 (≥) 41 22 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade A240 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
42 - -     0.44 -  
983 158 - 31.3 411   -  
246 - 34 43.2   334 344

Heat Treatment of steel grade A240 XM-27

Heat treated : 1943°C - 1483°C

Technological Curves of steel grade A240 XM-27

Cross Reference Table (Equivalent Grade) of A240 XM-27

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