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31 CrMo 12

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EU EN 31CrMo12 氮化钢 - 交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 31CrMo12 / 31 CrMo 12
Category Grade Standard Region/Area Standard Content
Metals 31 CrMo 12 EN 10085 EU 氮化钢 - 交货技术条件

Chemical composition(mass fraction)(wt.%) of the 31 CrMo 12

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.3000 0.5000 -
Mn 0.4000 0.7000 -
Cr 2.8000 3.3000 -
C 0.2800 0.3500 -

Mechanical Properties of steel grade 31 CrMo 12

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)
476 (≥) 426 (≥) 24 44 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade 31 CrMo 12

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
43 - -     0.14 -  
372 925 - 13.3 132   -  
576 - 44 24.2   231 234

Heat Treatment of steel grade 31 CrMo 12

Heat treated : 1553°C - 1475°C

Technological Curves of steel grade 31 CrMo 12

Cross Reference Table (Equivalent Grade) of 31 CrMo 12

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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