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America SAE 620 Automotive Steel Castings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 620 / 620
Category Grade Standard Region/Area Standard Content
Metals 620 SAE J 435 America Automotive Steel Castings

Chemical composition(mass fraction)(wt.%) of the 620

Element Min Max Similar
S - 0.0450 -
P - 0.0400 -

Mechanical Properties of steel grade 620

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)
874 (≥) 671 (≥) 41 13 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade 620

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 - -     0.11 -  
674 711 - 33.3 423   -  
579 - 41 44.2   421 414

Heat Treatment of steel grade 620

Heat treated : 1478°C - 1325°C

Technological Curves of steel grade 620

Cross Reference Table (Equivalent Grade) of 620

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