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AISI 4718

America AISI AISI4718 Estimated mechanical properties and machinability of steel bars and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AISI4718 / AISI 4718
Category Grade Standard Region/Area Standard Content
Metals AISI 4718 SAE J 1397 America Estimated mechanical properties and machinability of steel bars

Chemical composition(mass fraction)(wt.%) of the AISI 4718

Element Min Max Similar
C 0.1600 0.2100 -
Mn 0.7000 0.9000 -
P - 0.0350 -
S - 0.0400 -
Si 0.1500 0.3500 -
Ni 0.9000 1.2000 -
Cr 0.3500 0.5500 -
Mo 0.3000 0.4000 -
Cu - 0.3500 -
Pb - - -
C 0.1600 0.2100 -
Mn 0.7000 0.9000 -
P - 0.0250 -
S - 0.0250 -
Si 0.1500 0.3000 -
Ni 0.9000 1.2000 -
Cr 0.3000 0.5000 -
Mo 0.3000 0.4000 -
C 0.1600 0.2100 -
Mn 0.7000 0.9000 -
P - 0.0250 -
S - 0.0250 -
Si 0.1500 0.3000 -
Ni 0.9000 1.2000 -
Cr 0.3500 0.5500 -
Mo 0.3000 0.4000 -

Mechanical Properties of steel grade AISI 4718

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)
942 (≥) 596 (≥) 24 22 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade AISI 4718

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
31 - -     0.14 -  
125 163 - 42.3 233   -  
886 - 41 44.2   144 334

Heat Treatment of steel grade AISI 4718

Heat treated : 1542°C - 1551°C

Technological Curves of steel grade AISI 4718

Cross Reference Table (Equivalent Grade) of AISI 4718

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