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America SAE EX30 Former SAE Standard and Former SAE Ex-Steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: EX30 / EX 30
Category Grade Standard Region/Area Standard Content
Metals EX 30 SAE J 1249 America Former SAE Standard and Former SAE Ex-Steels

Chemical composition(mass fraction)(wt.%) of the EX 30

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0350 -
Ni 0.7000 1.0000 -
Mo 0.4500 0.6000 -
Mn 0.7000 0.9000 -
Cr 0.4500 0.6500 -
C 0.1300 0.1800 -

Mechanical Properties of steel grade EX 30

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)
422 (≥) 482 (≥) 31 24 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade EX 30

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
44 - -     0.14 -  
659 623 - 11.3 341   -  
117 - 42 43.2   112 143

Heat Treatment of steel grade EX 30

Heat treated : 1855°C - 1637°C

Technological Curves of steel grade EX 30

Cross Reference Table (Equivalent Grade) of EX 30

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