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303 Plus X

America SAE 303PlusX Chemical compositions of SAE wrought stainless steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 303PlusX / 303 Plus X
Category Grade Standard Region/Area Standard Content
Metals 303 Plus X SAE J 405 America Chemical compositions of SAE wrought stainless steels

Chemical composition(mass fraction)(wt.%) of the 303 Plus X

Element Min Max Similar
Si - 1.0000 -
S 0.1500 - -
P - 0.2000 -
Ni 7.0000 10.0000 -
Mo - 0.6000 -
Mn 2.5000 4.5000 -
Cr 17.0000 19.0000 -
C - 0.1500 -

Mechanical Properties of steel grade 303 Plus X

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)
197 (≥) 648 (≥) 12 44 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 303 Plus X

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
14 - -     0.33 -  
431 678 - 23.3 321   -  
699 - 11 12.2   144 342

Heat Treatment of steel grade 303 Plus X

Heat treated : 1865°C - 1952°C

Technological Curves of steel grade 303 Plus X

Cross Reference Table (Equivalent Grade) of 303 Plus X

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