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20 H 2 N 4 A

Poland PN 20H2N4A Alloyed structural steels for super loading equipment . Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20H2N4A / 20 H 2 N 4 A
Category Grade Standard Region/Area Standard Content
Metals 20 H 2 N 4 A PN H84035 Poland Alloyed structural steels for super loading equipment . Grades

Chemical composition(mass fraction)(wt.%) of the 20 H 2 N 4 A

Element Min Max Similar

Mechanical Properties of steel grade 20 H 2 N 4 A

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)
913 (≥) 164 (≥) 21 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade 20 H 2 N 4 A

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
41 - -     0.33 -  
721 732 - 43.3 443   -  
151 - 34 41.2   144 122

Heat Treatment of steel grade 20 H 2 N 4 A

Heat treated : 1334°C - 1925°C

Technological Curves of steel grade 20 H 2 N 4 A

Cross Reference Table (Equivalent Grade) of 20 H 2 N 4 A

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