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America UNS K19990 Alloy Steel(Bearing Steel) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K19990 / K19990
Category Grade Standard Region/Area Standard Content
Metals K19990 -- America Alloy Steel(Bearing Steel)

Chemical composition(mass fraction)(wt.%) of the K19990

Element Min Max Similar

Mechanical Properties of steel grade K19990

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)
535 (≥) 894 (≥) 43 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade K19990

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
34 - -     0.34 -  
856 297 - 14.3 331   -  
898 - 34 23.2   322 424

Heat Treatment of steel grade K19990

Heat treated : 1911°C - 1588°C

Technological Curves of steel grade K19990

Cross Reference Table (Equivalent Grade) of K19990

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