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America SAE 8620 Chemical compositions of SAE alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 8620 / 8620
Category Grade Standard Region/Area Standard Content
Metals 8620 SAE J 404 America Chemical compositions of SAE alloy steels

Chemical composition(mass fraction)(wt.%) of the 8620

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0350 -
Ni 0.4000 0.7000 -
Mo 0.1500 0.2500 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr 0.4000 0.6000 -
C 0.1800 0.2300 -
Si 0.1500 0.3500 -
S - 0.0100 -
P - 0.0120 -
Ni 0.4000 0.7000 -
Mo 0.1500 0.2500 -
Mn 0.7000 1.0000 -
Cu - 0.3500 -
Cr 0.4000 0.6000 -
C 0.1800 0.2300 -
Si 0.1500 0.3500 -
S - 0.0400 -
Pb 0.1500 0.3500 -
P - 0.0300 -
Ni 0.4000 0.7000 -
Mo 0.1500 0.2500 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr 0.4000 0.6000 -
C 0.1800 0.2300 -

Mechanical Properties of steel grade 8620

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)
979 (≥) 889 (≥) 34 12 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 8620

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
14 - -     0.44 -  
639 873 - 14.3 212   -  
399 - 24 31.2   213 332

Heat Treatment of steel grade 8620

Heat treated : 1393°C - 1523°C

Technological Curves of steel grade 8620

Cross Reference Table (Equivalent Grade) of 8620

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