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Poland PN 12H2N4A Alloyed structural steels for super loading equipment . Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12H2N4A / 12H2N4A
Category Grade Standard Region/Area Standard Content
Metals 12H2N4A PN H84035 Poland Alloyed structural steels for super loading equipment . Grades

Chemical composition(mass fraction)(wt.%) of the 12H2N4A

Element Min Max Similar
Si 0.1700 0.3700 -
S - 0.0250 -
P - 0.0300 -
Ni 3.2500 3.6500 -
Mn 0.3000 0.6000 -
Cu - 0.2000 -
Cr 1.2500 1.6500 -
C 0.0900 0.1600 -

Mechanical Properties of steel grade 12H2N4A

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)
636 (≥) 651 (≥) 33 23 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade 12H2N4A

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
13 - -     0.22 -  
338 974 - 12.3 323   -  
837 - 32 11.2   244 333

Heat Treatment of steel grade 12H2N4A

Heat treated : 1963°C - 1723°C

Technological Curves of steel grade 12H2N4A

Cross Reference Table (Equivalent Grade) of 12H2N4A

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