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America UNS K12040 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K12040 / K12040
Category Grade Standard Region/Area Standard Content
Metals K12040 -- America Alloy Steel

Chemical composition(mass fraction)(wt.%) of the K12040

Element Min Max Similar
Ti - 0.0700 -
Si 0.2500 0.7000 -
S - 0.0500 -
P - 0.0400 -
Ni - 0.8000 -
Mo - 0.1000 -
Mn - 1.2000 -
Cu 0.3000 0.5000 -
Cr 0.5000 1.0000 -
C - 0.2000 -

Mechanical Properties of steel grade K12040

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)
284 (≥) 372 (≥) 42 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade K12040

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 - -     0.24 -  
988 636 - 23.3 421   -  
514 - 12 43.2   343 413

Heat Treatment of steel grade K12040

Heat treated : 1566°C - 1262°C

Technological Curves of steel grade K12040

Cross Reference Table (Equivalent Grade) of K12040

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