High quality special steel supplier.Old rev.
  • Certified Company

    DNV&ABS
  • Certified Company

    ISO 9001:2008
  • R&D Production

    In China

303 MA


303 MA material is UNS 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 UNS 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 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.

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

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) 832 (≥)
Rm (MPa) 194 (≥)
AKV (J) 32
A (%) 24
Z (%) 33
Hardness HBW 424

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