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303 MA


303 MA material is ASTM 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 of 303 MA, 303 MA mechanical properties, 303 MA datasheet, 303 MA equivalent grade, Heat treatment and temperature process of 303 MA.


303 MA property sheet

303 MA Spec.

ASTM 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

Chemical Composition of 303 MA

C: Max 0.15
Si: Max 1.00
Mn: Max 2.00
P: Max 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

Mechanical Properties of 303 MA

Rp0.2 (MPa) 382 (≥)
Rm (MPa) 425 (≥)
AKV (J) 14
A (%) 33
Z (%) 12
Hardness HBW 343

303 MA shape and dimensions

303 MA Round bar: 1mm-800mm
303 MA Square bar: 10mm * 10mm-600mm *600mm
303 MA Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
303 MA Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
303 MA Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
303 MA Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes