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America SAE 725 Automotive Steel Castings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 725 / 725
Category Grade Standard Region/Area Standard Content
Metals 725 SAE J 435 America Automotive Steel Castings

Chemical composition(mass fraction)(wt.%) of the 725

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

Mechanical Properties of steel grade 725

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)
915 (≥) 554 (≥) 42 42 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade 725

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 - -     0.32 -  
193 349 - 23.3 212   -  
677 - 43 31.2   441 412

Heat Treatment of steel grade 725

Heat treated : 1497°C - 1397°C

Technological Curves of steel grade 725

Cross Reference Table (Equivalent Grade) of 725

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