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Poland PN 20HGSA Structural alloy steel -- Steel for heat treatment (quenching + tempering) and surface hardening-Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20HGSA / 20 HGSA
Category Grade Standard Region/Area Standard Content
Metals 20 HGSA PN H84030-04 Poland Structural alloy steel -- Steel for heat treatment (quenching + tempering) and surface hardening-Grades

Chemical composition(mass fraction)(wt.%) of the 20 HGSA

Element Min Max Similar

Mechanical Properties of steel grade 20 HGSA

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)
593 (≥) 388 (≥) 34 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade 20 HGSA

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
14 - -     0.12 -  
616 941 - 11.3 234   -  
443 - 23 42.2   324 322

Heat Treatment of steel grade 20 HGSA

Heat treated : 1972°C - 1726°C

Technological Curves of steel grade 20 HGSA

Cross Reference Table (Equivalent Grade) of 20 HGSA

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