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America UNS K40712 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K40712 / K40712
Category Grade Standard Region/Area Standard Content
Metals K40712 -- America Alloy Steel

Chemical composition(mass fraction)(wt.%) of the K40712

Element Min Max Similar
W 1.4500 1.7500 -
V 0.2000 0.3000 -
Si - 0.5000 -
S - 0.0100 -
P - 0.0300 -
Nb 0.0200 0.0800 -
N - 0.0300 -
Mo 0.0500 0.3000 -
Mn 0.1000 0.6000 -
Cr 1.9000 2.6000 -
C 0.0400 0.1000 -
B 0.0005 0.0060 -

Mechanical Properties of steel grade K40712

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)
772 (≥) 538 (≥) 22 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade K40712

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
24 - -     0.43 -  
397 361 - 41.3 324   -  
715 - 13 11.2   112 142

Heat Treatment of steel grade K40712

Heat treated : 1929°C - 1773°C

Technological Curves of steel grade K40712

Cross Reference Table (Equivalent Grade) of K40712

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