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America SAE EX3 Former SAE Standard and Former SAE Ex-Steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: EX3 / EX 3
Category Grade Standard Region/Area Standard Content
Metals EX 3 SAE J 1249 America Former SAE Standard and Former SAE Ex-Steels

Chemical composition(mass fraction)(wt.%) of the EX 3

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0350 -
Mn 0.7500 1.0000 -
Cr 0.4000 0.6000 -
C 0.5600 0.6400 -

Mechanical Properties of steel grade EX 3

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)
396 (≥) 499 (≥) 21 43 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade EX 3

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
42 - -     0.13 -  
896 773 - 11.3 142   -  
185 - 33 31.2   411 134

Heat Treatment of steel grade EX 3

Heat treated : 1597°C - 1627°C

Technological Curves of steel grade EX 3

Cross Reference Table (Equivalent Grade) of EX 3

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