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America UNS K91231 轴承钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K91231 / K91231
Category Grade Standard Region/Area Standard Content
Metals K91231 -- America 轴承钢

Chemical composition(mass fraction)(wt.%) of the K91231

Element Min Max Similar

Mechanical Properties of steel grade K91231

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)
871 (≥) 711 (≥) 42 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade K91231

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
43 - -     0.33 -  
588 869 - 13.3 321   -  
148 - 12 13.2   112 144

Heat Treatment of steel grade K91231

Heat treated : 1645°C - 1799°C

Technological Curves of steel grade K91231

Cross Reference Table (Equivalent Grade) of K91231

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