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America SAE 8622RH Restricted hardenability bands for selected alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 8622RH / 8622 RH
Category Grade Standard Region/Area Standard Content
Metals 8622 RH SAE J 1868 America Restricted hardenability bands for selected alloy steels

Chemical composition(mass fraction)(wt.%) of the 8622 RH

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0250 -
Ni 0.4000 0.7000 -
Mo 0.1500 0.2500 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr 0.4000 0.6000 -
C 0.2000 0.2500 -

Mechanical Properties of steel grade 8622 RH

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)
963 (≥) 738 (≥) 24 31 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade 8622 RH

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 - -     0.42 -  
429 648 - 22.3 231   -  
565 - 12 42.2   214 322

Heat Treatment of steel grade 8622 RH

Heat treated : 1712°C - 1716°C

Technological Curves of steel grade 8622 RH

Cross Reference Table (Equivalent Grade) of 8622 RH

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