303 MA

303 MA Stainless Steels to SAE AMS 5638G (2010)

303 MA - Specification & Application

  • SAE AMS 5638G (2010) - Steel, Corrosion-Resistant, Bars and Forgings 0.14S - 18Cr - 9.5Ni - 0.50Mo - 0.80Al (303MA) Free-Machining; Swaging or Upsetting Solution Heat Treated

Steel, Corrosion-Resistant, Bars and Forgings 0.14S - 18Cr - 9.5Ni - 0.50Mo - 0.80Al (303MA) Free-Machining; Swaging or Upsetting Solution Heat Treated

Chemical composition(wt.%) of 303 MA grade: to SAE AMS 5638G (2010)

Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.15
Si - 1.00
Mn - 2.00
P - 0.05
S 0.11 0.16
Cr 17.0 19.0
Ni 8.00 10.0
Mo 0.40 0.60
Al 0.60 1.00

303 MA - Detail

Steel, Corrosion-Resistant, Bars and Forgings 0.14S - 18Cr - 9.5Ni - 0.50Mo - 0.80Al (303MA) Free-Machining; Swaging or Upsetting Solution Heat Treated

Mechanical properties of grade 303 MA SAE AMS 5638G (2010)

Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
499 (≥) 519 (≥) 14 33 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical properties of grade 303 MA SAE AMS 5638G (2010)

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
988 (≥) 574 (≥) 41 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 443
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
859 467 526

Equivalent Grade

1 303 MA 2 303 MA 3 A 959 Type XM-2 4 A 581 S30345 5 A 582 S30345 6 S30345

Equivalent Products

Product shapes we supply:

We can customize the production of 303 MA grade, contact us for the best solution.
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