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America SAE 8630 Chemical compositions of SAE alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 8630 / 8630
Category Grade Standard Region/Area Standard Content
Metals 8630 SAE J 404 America Chemical compositions of SAE alloy steels

Chemical composition(mass fraction)(wt.%) of the 8630

Element Min Max Similar
Si 0.2000 0.3500 -
S - 0.0250 -
P - 0.0250 -
Mo 0.1500 0.2500 -
Mn 0.4000 0.6000 -
Cr 0.8000 1.1000 -
C 0.2800 0.3300 -
Si 0.2000 0.3500 -
S - 0.0250 -
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 0.2800 0.3300 -
Si 0.2000 0.3500 -
S - 0.0400 -
P - 0.0400 -
Ni 0.4000 0.7000 -
Mo 0.1500 0.2500 -
Mn 0.7000 0.9000 -
Cr 0.4000 0.6000 -
C 0.2700 0.3300 -
Si 0.1500 0.3500 -
S - 0.0250 -
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 0.2800 0.3300 -
Si 0.1500 0.3500 -
S - 0.0250 -
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 0.2800 0.3300 -
Si 0.1500 0.3500 -
S - 0.0250 -
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 0.2800 0.3300 -
Si 0.1500 0.3500 -
S - 0.0250 -
P - 0.0250 -
Ni 0.4000 0.7000 -
Mo 0.2000 0.3000 -
Mn 0.7500 1.0000 -
Cu - 0.3500 -
Cr 0.4000 0.6000 -
C 0.3300 0.3800 -
Si 0.1500 0.3500 -
S - 0.0250 -
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 0.2800 0.3300 -
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 0.2800 0.3300 -

Mechanical Properties of steel grade 8630

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)
225 (≥) 753 (≥) 13 41 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade 8630

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
41 - -     0.22 -  
283 956 - 32.3 112   -  
784 - 33 22.2   431 442

Heat Treatment of steel grade 8630

Heat treated : 1888°C - 1158°C

Technological Curves of steel grade 8630

Cross Reference Table (Equivalent Grade) of 8630

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