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America SAE 5140 Chemical compositions of SAE alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 5140 / 5140
Category Grade Standard Region/Area Standard Content
Metals 5140 SAE J 404 America Chemical compositions of SAE alloy steels

Chemical composition(mass fraction)(wt.%) of the 5140

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0300 -
Ni - 0.2500 -
Mo - 0.0600 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr 0.7000 0.9000 -
C 0.3800 0.4300 -
Si 0.1500 0.3500 -
S - 0.0400 -
Pb 0.1500 0.3500 -
P - 0.0300 -
Ni - 0.2500 -
Mo - 0.0600 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr 0.7000 0.9000 -
C 0.3800 0.4300 -
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0300 -
Ni - 0.2500 -
Mo - 0.0600 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr 0.7000 0.9000 -
C 0.3800 0.4300 -

Mechanical Properties of steel grade 5140

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)
685 (≥) 178 (≥) 42 41 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade 5140

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
22 - -     0.33 -  
147 652 - 21.3 124   -  
263 - 33 12.2   343 222

Heat Treatment of steel grade 5140

Heat treated : 1585°C - 1985°C

Technological Curves of steel grade 5140

Cross Reference Table (Equivalent Grade) of 5140

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