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America UNS K22770 Alloy Steel(17-22A) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K22770 / K22770
Category Grade Standard Region/Area Standard Content
Metals K22770 -- America Alloy Steel(17-22A)

Chemical composition(mass fraction)(wt.%) of the K22770

Element Min Max Similar
V 0.7500 0.9500 -
Si 0.5500 0.7500 -
S - 0.0250 -
P - 0.0250 -
Ni - 0.5000 -
Mo 0.4000 0.6000 -
Mn 0.6000 0.9000 -
Cu - 0.5000 -
Cr 1.0000 1.5000 -
C 0.2500 0.3000 -

Mechanical Properties of steel grade K22770

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)
639 (≥) 771 (≥) 24 11 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade K22770

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
32 - -     0.31 -  
438 164 - 24.3 331   -  
488 - 33 44.2   313 414

Heat Treatment of steel grade K22770

Heat treated : 1465°C - 1261°C

Technological Curves of steel grade K22770

Cross Reference Table (Equivalent Grade) of K22770

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