AM-355 AMS 5743; AMS 5744

AM-355 is a chromium-nickel-molybdenum stainless steel. It offers high strength at moderately elevated temperatures and its corrosion resistance is superior to other quench-hardenable martensitic stainless steels.  Higher strengths can also be obtained through cold working processes. 

Stock sizes: .750” to 4.500” diameters.

Common Specifications:

  • AMS 5743
  • AMS 5744
  • Honeywell 91547-M3710
  • Honeywell EMS 55443
  • Pratt a& Whitney LCS F-17
  • General Electric S-400 / S-SPEC-35

Industry Trade Names:

  • Pyromet 355
  • UNS S35500

Common Applications:

  • Rotors
  • Shafts
  • Discs
  • Blades and knives

Hardness shall not exceed 363 HB for diameter over .625 inch.  Diameter .625 inch and under can have a hardness as high at 375 HB. 

Common Melting Process is ARC/AOD – ESR.

Common Heat Treat Condition: Annealed, sub-zero cooled, equalized and over-tempered.

Rockwell-Industries-AM-355-ams-5743-image

Composition

Element Min. Max.
Carbon 0.10 0.15
Manganese 0.50 1.25
Silicon 0.50
Phosphorus 0.040
Sulfur 0.030
Chromium 15.00 16.00
Nickel 4.00 5.00
Molybdenum 0.250 3.25
Nitrogen 0.07 0.13

Minimum Tensile Properties:

Property Value
Tensile Strength 170 ksi (1172 MPa)
Yield Strength at 0.2% Offset 155 ksi (1069 MPa)
Elongation in 4D 12%
Reduction of Area 25%