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Korea KS P42 Steel forgings and rolled or forged bars for pressure purposes-Technical delivery conditions-Part 4:Weldable fine grain steels with high proof strength and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P42 / P 42
Category Grade Standard Region/Area Standard Content
Metals P 42 KS D ISO 9327-4 Korea Steel forgings and rolled or forged bars for pressure purposes-Technical delivery conditions-Part 4:Weldable fine grain steels with high proof strength

Chemical composition(mass fraction)(wt.%) of the P 42

Element Min Max Similar
C - 0.2000 -
Mn 1.0000 1.7000 -
P - 0.0350 -
S - 0.0300 -
Si 0.1000 0.6000 -
Ni - 1.0000 -
Cr - 0.3000 -
Mo - 0.1000 -
Cu - 0.3000 -
V - 0.2000 -
Ti - 0.2000 -
Al 0.0200 - -
N - 0.0200 -
Nb - 0.0500 -
Nb+Ti+V - 0.2200 -

Mechanical Properties of steel grade P 42

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)
722 (≥) 528 (≥) 41 44 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade P 42

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 - -     0.24 -  
819 916 - 24.3 232   -  
745 - 24 23.2   244 122

Heat Treatment of steel grade P 42

Heat treated : 1949°C - 1152°C

Technological Curves of steel grade P 42

Cross Reference Table (Equivalent Grade) of P 42

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