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

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

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

Element Min Max Similar
Si - 1.0000 -
S 0.1000 0.1600 -
P - 0.0400 -
Ni 8.5000 10.5000 -
Mo 0.4000 0.6000 -
Mn - 2.0000 -
Cu - 0.5000 -
Cr 17.0000 19.0000 -
C - 0.1500 -
Al 0.6000 1.0000 -
Si - 1.0000 -
S 0.1100 0.1600 -
P - 0.0500 -
Ni 8.0000 10.0000 -
Mo 0.4000 0.6000 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C - 0.1500 -
Al 0.6000 1.0000 -

Mechanical Properties of steel grade 303 MA

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)
857 (≥) 513 (≥) 31 31 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade 303 MA

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
33 - -     0.34 -  
691 851 - 31.3 134   -  
562 - 34 44.2   221 123

Heat Treatment of steel grade 303 MA

Heat treated : 1784°C - 1491°C

Technological Curves of steel grade 303 MA

Cross Reference Table (Equivalent Grade) of 303 MA

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