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Poland PN St42P Steel for railway -- Rolled sections for railway accessories -- Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St42P / St 42 P
Category Grade Standard Region/Area Standard Content
Metals St 42 P PN H84027-08 Poland Steel for railway -- Rolled sections for railway accessories -- Grades

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

Element Min Max Similar
C - 0.2800 -
Mn - 0.9000 -
P - 0.0500 -
S - 0.0500 -
Si 0.0700 - -
Si 0.0700 - -
S - 0.0500 -
P - 0.0500 -
Mn - 0.9000 -
C - 0.2800 -

Mechanical Properties of steel grade St 42 P

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)
633 (≥) 516 (≥) 31 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade St 42 P

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
22 - -     0.42 -  
991 761 - 44.3 431   -  
448 - 12 12.2   141 232

Heat Treatment of steel grade St 42 P

Heat treated : 1278°C - 1452°C

Technological Curves of steel grade St 42 P

Cross Reference Table (Equivalent Grade) of St 42 P

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