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AISI 4621

America AISI AISI4621 Former SAE Standard and Former SAE Ex-Steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AISI4621 / AISI 4621
Category Grade Standard Region/Area Standard Content
Metals AISI 4621 SAE J 1249 America Former SAE Standard and Former SAE Ex-Steels

Chemical composition(mass fraction)(wt.%) of the AISI 4621

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0400 -
Ni 1.6500 2.0000 -
Mo 0.2000 0.3000 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr - 0.2000 -
C 0.1800 0.2300 -
Si 0.1500 0.3000 -
S - 0.0400 -
P - 0.0350 -
Ni 1.6500 2.0000 -
Mo 0.2000 0.3000 -
Mn 0.7000 0.9000 -
C 0.1800 0.2300 -

Mechanical Properties of steel grade AISI 4621

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)
524 (≥) 268 (≥) 44 43 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade AISI 4621

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
33 - -     0.22 -  
183 477 - 12.3 324   -  
461 - 42 44.2   422 433

Heat Treatment of steel grade AISI 4621

Heat treated : 1661°C - 1965°C

Technological Curves of steel grade AISI 4621

Cross Reference Table (Equivalent Grade) of AISI 4621

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