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Poland PN 45G2 Structural alloy steel -- Steel for heat treatment (quenching + tempering) and surface hardening-Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 45G2 / 45 G 2
Category Grade Standard Region/Area Standard Content
Metals 45 G 2 PN H84030-04 Poland Structural alloy steel -- Steel for heat treatment (quenching + tempering) and surface hardening-Grades

Chemical composition(mass fraction)(wt.%) of the 45 G 2

Element Min Max Similar

Mechanical Properties of steel grade 45 G 2

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)
512 (≥) 741 (≥) 31 33 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade 45 G 2

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
33 - -     0.11 -  
786 282 - 34.3 121   -  
591 - 21 33.2   443 114

Heat Treatment of steel grade 45 G 2

Heat treated : 1152°C - 1884°C

Technological Curves of steel grade 45 G 2

Cross Reference Table (Equivalent Grade) of 45 G 2

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