{"id":1922,"date":"2024-08-06T16:16:42","date_gmt":"2024-08-06T16:16:42","guid":{"rendered":"https:\/\/haynesintl.com\/alloys\/haynes-244\/"},"modified":"2025-08-05T17:40:16","modified_gmt":"2025-08-05T17:40:16","slug":"haynes-244","status":"publish","type":"alloys","link":"https:\/\/haynesintl.com\/en\/alloys\/alloy-portfolio\/high-temperature-alloys\/haynes-244\/","title":{"rendered":"HAYNES\u00ae<\/sup> 244\u00ae<\/sup>"},"content":{"rendered":"\n
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Principal Features<\/h2>\n\n\n\n

HAYNES\u00ae<\/sup> 244\u00ae<\/sup> 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\u00b0F (760\u00b0C). It offers a higher maximum use temperature than other low thermal expansion alloys currently available, including a 100-200\u00b0F (55-110\u00b0C) improvement over HAYNES\u00ae<\/sup> 242\u00ae<\/sup> alloy. The alloy is age-hardenable by formation of Ni2<\/sub> (Cr,Mo,W) domains, which are structurally similar to the strengthening domains in 242\u00ae<\/sup> 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\u00ae<\/sup> alloy.<\/p>\n\n\n\n

*Please contact our technical support team<\/a> if you have technical questions about this alloy.<\/p>\n<\/div><\/div>\n\n\n\n

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Nominal Composition<\/h2>\n\n\n\n
\n
\n \n\n \n \n \n \n \n \n \n \n \n
\n Weight % <\/td>\n <\/tr>\n
\n Nickel <\/td>\n \n Balance <\/td>\n <\/tr>\n
\n Aluminum <\/td>\n \n 0.5 max. <\/td>\n <\/tr>\n
\n Carbon <\/td>\n \n 0.03 max. <\/td>\n <\/tr>\n
\n Chromium <\/td>\n \n 8 <\/td>\n <\/tr>\n
\n Iron <\/td>\n \n 2 max. <\/td>\n <\/tr>\n
\n Manganese <\/td>\n \n 0.8 max. <\/td>\n <\/tr>\n
\n Molybdenum <\/td>\n \n 22.5 <\/td>\n <\/tr>\n
\n Tungsten <\/td>\n \n 6 <\/td>\n <\/tr>\n <\/table>\n<\/div>