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America SAE SAE8620 合金结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SAE8620 / SAE 8620
Category Grade Standard Region/Area Standard Content
Metals SAE 8620 -- America 合金结构钢

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

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

Mechanical Properties of steel grade SAE 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)
821 (≥) 149 (≥) 23 43 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade SAE 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
33 - -     0.24 -  
183 997 - 32.3 221   -  
319 - 31 33.2   424 441

Heat Treatment of steel grade SAE 8620

Heat treated : 1696°C - 1759°C

Technological Curves of steel grade SAE 8620

Cross Reference Table (Equivalent Grade) of SAE 8620

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