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A731 Grade 18Cr-2Mo

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America ASTM A731Grade18Cr-2Mo 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.

Datasheet for: Metals: A731Grade18Cr-2Mo / A731 Grade 18Cr-2Mo
Category Grade Standard Region/Area Standard Content
Metals A731 Grade 18Cr-2Mo 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 18Cr-2Mo

Element Min Max Similar
Ti - - -
Si - 1.0000 -
S - 0.0300 -
P - 0.0400 -
Ni+Cu - 1.0000 -
N - 0.0350 -
Mo 1.7500 2.5000 -
Mn - 1.0000 -
Cr 17.5000 19.5000 -
C - 0.0250 -

Mechanical Properties of steel grade A731 Grade 18Cr-2Mo

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)
384 (≥) 919 (≥) 12 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade A731 Grade 18Cr-2Mo

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 - -     0.11 -  
127 628 - 22.3 424   -  
982 - 44 23.2   442 112

Heat Treatment of steel grade A731 Grade 18Cr-2Mo

Heat treated : 1474°C - 1259°C

Technological Curves of steel grade A731 Grade 18Cr-2Mo

Cross Reference Table (Equivalent Grade) of A731 Grade 18Cr-2Mo

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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