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Poland PN 34HNM Structural alloy steel --Steel for heat treatment (quenching+tempering) and surface hardening -- Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 34HNM / 34 HNM
Category Grade Standard Region/Area Standard Content
Metals 34 HNM PN H84030-04 Poland Structural alloy steel --Steel for heat treatment (quenching+tempering) and surface hardening -- Grades

Chemical composition(mass fraction)(wt.%) of the 34 HNM

Element Min Max Similar
Ti - 0.0500 -
W - 0.2000 -
V - 0.0500 -
Si 0.1700 0.3700 -
S - 0.0350 -
P - 0.0350 -
Ni 1.3000 1.7000 -
Mo 0.1500 0.2500 -
Mn 0.4000 0.7000 -
Cu - 0.3000 -
Cr 1.3000 1.7000 -
C 0.3200 0.4000 -

Mechanical Properties of steel grade 34 HNM

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)
538 (≥) 621 (≥) 33 24 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade 34 HNM

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 - -     0.44 -  
798 556 - 12.3 233   -  
198 - 34 24.2   342 232

Heat Treatment of steel grade 34 HNM

Heat treated : 1398°C - 1971°C

Technological Curves of steel grade 34 HNM

Cross Reference Table (Equivalent Grade) of 34 HNM

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