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. 

Common stock sizes: .750” to 6.000” 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-Intl-AM-355 Bar-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%