Description
Haynes 244
HAYNES® 244® alloy is a new Ni-Mo-Cr-W alloy developed for static parts in advanced gas turbine engines which require low thermal expansion at temperatures up to 1400°F (760°C). It offers a higher maximum use temperature than other low thermal expansion alloys currently available, including a 100-200°F (55-110°C) improvement over HAYNES® 242® alloy. The alloy is age-hardenable by formation of Ni2 (Cr,Mo,W) domains, which are structurally similar to the strengthening domains in 242® alloy. Judicious alloying with tungsten increased the thermal stability of these domains and lowered the coefficient of thermal expansion. Other important properties such as oxidation resistance and low-cycle fatigue performance are comparable or better than those of 242® alloy.
%Chemical Composition
| W | Mo | Mn | Fe | Cr | C | Al | Ni |
| 6 | 22.5 | (max) 0.8 | (max) 2 | 8 | (max) 0.03 | (max) 0.5 | Balance |
Density & Melting Range
| Melting Range (Celsius) | Density |
| 1400 – 1360 | (g/cm) 9.33 |
DM unit
Reviews
There are no reviews yet.