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America SAE 4620 Chemical compositions of SAE alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4620 / 4620
Category Grade Standard Region/Area Standard Content
Metals 4620 SAE J 404 America Chemical compositions of SAE alloy steels

Chemical composition(mass fraction)(wt.%) of the 4620

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0300 -
Ni 1.6500 2.0000 -
Mo 0.2000 0.3000 -
Mn 0.4500 0.6500 -
Cu - 0.3500 -
Cr - 0.2000 -
C 0.1700 0.2200 -

Mechanical Properties of steel grade 4620

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)
364 (≥) 426 (≥) 24 21 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade 4620

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
12 - -     0.23 -  
898 452 - 13.3 424   -  
347 - 41 21.2   412 443

Heat Treatment of steel grade 4620

Heat treated : 1893°C - 1754°C

Technological Curves of steel grade 4620

Cross Reference Table (Equivalent Grade) of 4620

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