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: 0.750” to 4.500” diameter
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.
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% |
