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X 3 CrNiMo 18-12-3

EU EN X3CrNiMo18-12-3 承压钢锻件 - 第5部分:马氏体,奥氏体和奥氏体-铁素体不锈钢 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals X 3 CrNiMo 18-12-3 EN 10222-5 EU 承压钢锻件 - 第5部分:马氏体,奥氏体和奥氏体-铁素体不锈钢

Chemical composition(mass fraction)(wt.%) of the X 3 CrNiMo 18-12-3

Element Min Max Similar
C - 0.0350 -
Mn - 2.0000 -
P - 0.0450 -
S - 0.0150 -
Si - 1.0000 -
Ni 11.5000 12.5000 -
Cr 17.0000 18.2000 -
Mo 2.2500 2.7500 -
Cu - 1.0000 -
N - 0.0800 -

Mechanical Properties of steel grade X 3 CrNiMo 18-12-3

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)
134 (≥) 724 (≥) 31 14 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade X 3 CrNiMo 18-12-3

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
44 - -     0.21 -  
624 142 - 24.3 114   -  
839 - 21 12.2   333 443

Heat Treatment of steel grade X 3 CrNiMo 18-12-3

Heat treated : 1156°C - 1262°C

Technological Curves of steel grade X 3 CrNiMo 18-12-3

Cross Reference Table (Equivalent Grade) of X 3 CrNiMo 18-12-3

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