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Poland PN 20Y Unalloyed wrought steel for case hardening and for quenching and tempering -- Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20Y / 20 Y
Category Grade Standard Region/Area Standard Content
Metals 20 Y PN H84019 Poland Unalloyed wrought steel for case hardening and for quenching and tempering -- Grades

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

Element Min Max Similar
C 0.1700 0.2500 -
Mn 0.3000 0.5000 -
P - 0.0350 -
S - 0.0350 -
Si 0.3000 0.6000 -
Ni - 0.6000 -
Cr 1.2000 1.5000 -
Mo 1.0000 1.2000 -
V 0.2500 0.3500 -
V 0.2500 0.3500 -
Si 0.3000 0.6000 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.6000 -
Mo 1.0000 1.2000 -
Mn 0.3000 0.5000 -
Cr 1.2000 1.5000 -
C 0.1700 0.2500 -

Mechanical Properties of steel grade 20 Y

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)
522 (≥) 323 (≥) 32 23 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade 20 Y

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 - -     0.12 -  
597 217 - 12.3 334   -  
486 - 24 21.2   144 424

Heat Treatment of steel grade 20 Y

Heat treated : 1589°C - 1547°C

Technological Curves of steel grade 20 Y

Cross Reference Table (Equivalent Grade) of 20 Y

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