303 MA - Cast Iron and Cast Steel

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
SAE J 405 (1998) - Chemical compositions of SAE wrought stainless steels

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.（≤）
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 R_p0.2 (MPa)	Tensile strength R_m (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
382 (≥)	635 (≥)	32	44	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	323

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
998 (≥)	386 (≥)	13	34	14	Solution and Aging, Annealing, Ausaging, Q+T,etc	413
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
313	886	841

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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