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Poland PN LH20M Steel forgings for rolling bearings rings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: LH20M / LH20M
Category Grade Standard Region/Area Standard Content
Metals LH20M PN H94021 Poland Steel forgings for rolling bearings rings

Chemical composition(mass fraction)(wt.%) of the LH20M

Element Min Max Similar
C 0.9500 1.1000 -
Mn 0.7000 0.9000 -
P - 0.0270 -
S - 0.0200 -
Si 0.4000 0.6000 -
Ni - 0.3000 -
Cr 1.8500 2.1000 -
Mo 0.4000 0.5000 -
Cu - 0.2500 -
Ni+Cu - 0.5000 -

Mechanical Properties of steel grade LH20M

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)
243 (≥) 525 (≥) 13 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade LH20M

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 - -     0.12 -  
457 988 - 13.3 424   -  
495 - 32 32.2   312 233

Heat Treatment of steel grade LH20M

Heat treated : 1487°C - 1179°C

Technological Curves of steel grade LH20M

Cross Reference Table (Equivalent Grade) of LH20M

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