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12 MoCr 50

Romania STAS 12MoCr50 Hot rolled steel. Steel plates for boilers and pressure purposes for use at room temperature and elevated temperatures and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12MoCr50 / 12 MoCr 50
Category Grade Standard Region/Area Standard Content
Metals 12 MoCr 50 STAS 2883-3 Romania Hot rolled steel. Steel plates for boilers and pressure purposes for use at room temperature and elevated temperatures

Chemical composition(mass fraction)(wt.%) of the 12 MoCr 50

Element Min Max Similar
V 0.1500 0.3000 -
Si 0.1500 0.5000 -
S - 0.0300 -
P - 0.0350 -
Ni - 0.3000 -
N - 0.0090 -
Mo 0.4500 0.6500 -
Mn 0.3000 0.6000 -
Cu - 0.3000 -
Cr 4.0000 6.0000 -
C 0.0800 0.1500 -
As - 0.0500 -
Al 0.0150 0.0250 -

Mechanical Properties of steel grade 12 MoCr 50

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)
356 (≥) 416 (≥) 11 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade 12 MoCr 50

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
23 - -     0.42 -  
651 314 - 42.3 324   -  
118 - 24 13.2   311 312

Heat Treatment of steel grade 12 MoCr 50

Heat treated : 1818°C - 1811°C

Technological Curves of steel grade 12 MoCr 50

Cross Reference Table (Equivalent Grade) of 12 MoCr 50

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