About Alloy
Multimet N155 (AMS 5532 / AMS 5769) is a Nickel-Chromium-Cobalt alloy with additions of Molybdenum and Tungsten used typically in parts requiring high strength up to 1350°F and oxidation resistance up to 1800°F. Its high-temperature properties are inherent in the as-supplied condition (solution treated at 2150°F) and are not dependent on age-hardening. Multimet N155 is used in a number of aerospace applications such as tailpipes and tail cones, turbine blades, shafts and rotors, afterburner components and high-temperature bolts.
Product Form
Sheet, Plate and Strip: AMS 5532
Bars, Rings and Forgings: AMS 5769
Welding Wire: AMS 5794
Coated Electrodes: AMS 5795
Chemical Composition
| C | Carbon 0.08 – 0.16 |
| Mn | Manganese 1.00 – 2.00 max |
| Si | Silicon 1.00 max |
| S | Sulfur 0.03 max |
| P | Phosphorus 0.04 max |
| Cr | Chromium 20.00 – 22.5 |
| Ni | Nickel 19.00 – 21.00 |
| Co | Cobalt 18.5 – 21.00 |
| Mo | Molybdenum 2.5 – 3.5 |
| W | Tungsten 2.0 – 3.0 |
| Cb + Ta | Niobium + Tantalum 0.75 – 1.25 |
| N | Nitrogen 0.1 – 0.2 |
Property
| Material | Form | Ultimate Tensile Strength ksi | Elongation in 2" (min) | Hardness HB |
| Multimet N155 | Bar (AMS 5769) | 156-217 | ||
| Multimet N155 | Sheet / Plate (AMS 5532) | 110-140 | 40 | - |
Application
Multimet N155 nickel alloy is used for numerous industrial applications, some of which include:
Air & land based turbine engines
Aircraft tail cones & tail pipes
Aircraft exhaust manifolds
Aircraft combustion chambers
Afterburners
Buckets & bolts
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