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Technical Data Sheet
Alloy 901 is an age-hardenable super alloy which contains Titanium and Aluminium for precipitation hardening and molybdenum for soild-solution strengthening. Alloy 901 has high yield strength and creep resistance at temperatures to about 1110°F (600°C). As Alloy 901 has a substantial iron content it enables alloy 901 to combine strength with good forging characteristics. Alloy 901 is commonly used for gas turbine engine discs, shafts, rings, casings and seals.
| Chemical Composition Limits | ||||||||||||
| Weight% | Ni | Cr | Mo | Ti | Co | Cu | Mn | Si | Al | C | S | Fe |
| Alloy 901 | 42.5 | 12.5 | 5.75 | 2.9 | 1.0 max | 0.5 max | 0.5 max | 0.4 max | 0.35 max | 0.1 max | 0.03 max | Bal |
Typical Mechanical Properties
| Material | Tensile Strength ksi | Yield Strength ksi | Elongation in 4D(%) | Reduction of Area % | Hardness HB |
| Alloy 901 | 150 | 100 | 12 | 15 | 302-388 |
Heat Treatment:
Solution Treatment: 1975-2025°F / 2 hrs + Air Cool
Stabilization Heat Treatment: 1425 - 1475°F / 2-4 hrs + Air Cool
Precipitation Heat Treatment: 1325 - 1375 / 24 hrs +Any Cool
Availability
Alloy 901 is available in Flat Bar, Round Bar, Rod, Wire, Welding Wire and Forging Stock. For all stock availability contact Sales.
Specifications
UNS N09901
Werkstoff Number 2.4662
BR HR 55
AMS 5660
AMS 5661
AECMA PrEN2176
AECMA PrEN2177
ISO 9723
ISO 9725
MSRR 7029, MSRR 7031
Nimonic alloy 901 (tradename)
