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A731 Grade CA 6 NM

America ASTM A731GradeCA6NM 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 CA 6 NM 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 CA 6 NM

Element Min Max Similar
Si - 0.0600 -
S - 0.0300 -
P - 0.0300 -
Ni+Cu 3.5000 5.5000 -
Mo 0.5000 1.0000 -
Mn 0.0500 1.0000 -
Cr 11.5000 14.0000 -
C - 0.0500 -

Mechanical Properties of steel grade A731 Grade CA 6 NM

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)
749 (≥) 569 (≥) 43 43 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade A731 Grade CA 6 NM

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 - -     0.43 -  
468 195 - 31.3 141   -  
725 - 34 14.2   444 144

Heat Treatment of steel grade A731 Grade CA 6 NM

Heat treated : 1776°C - 1199°C

Technological Curves of steel grade A731 Grade CA 6 NM

Cross Reference Table (Equivalent Grade) of A731 Grade CA 6 NM

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