{"id":8364,"date":"2019-07-31T14:01:03","date_gmt":"2019-07-31T14:01:03","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts-new\/results\/-\/journal_content\/56\/10192\/37916572\/NEWS\/"},"modified":"2023-02-07T04:48:45","modified_gmt":"2023-02-07T04:48:45","slug":"haynes-ni-mo-cr-w-alloy-designed-for-low-thermal-expansion-at-1400f-in-gas-turbines","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/hts\/haynes-ni-mo-cr-w-alloy-designed-for-low-thermal-expansion-at-1400f-in-gas-turbines\/","title":{"rendered":"Haynes Ni-Mo-Cr-W alloy designed for low thermal expansion at 1400\u00b0F in gas turbines"},"content":{"rendered":"<p style=\"margin-bottom:.0001pt\"><span style=\"line-height:normal\"><span style=\"font-size:12.0pt\">Haynes International, Kokomo, Ind., announces that it has new alloy data for Haynes 244, a new Ni-Mo-Cr-W alloy developed for static parts in advanced gas turbine engines that require low thermal expansion at temperatures up to 1400\u00b0F.<\/span><\/span><\/p>\n<p style=\"margin-bottom:.0001pt\">&nbsp;<\/p>\n<p style=\"margin-bottom:.0001pt\"><span style=\"line-height:normal\"><span style=\"font-size:12.0pt\">Alloy 244 offers a higher maximum service temperature than other low thermal-expansion alloys currently available, including a 100 to 200\u00b0F 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 to or better than those of the 242 alloy.<\/span><\/span><\/p>\n<p style=\"margin-bottom:.0001pt\">&nbsp;<\/p>\n<p style=\"margin-bottom:.0001pt\"><span style=\"line-height:normal\"><span style=\"font-size:12.0pt\"><span style=\"background:white\"><span style=\"color:black\">The 244 alloy exhibits very good oxidation resistance at temperatures up to 1400\u00b0F, and should not require protective coatings for continuous or intermittent service at these temperatures. The alloy is not specifically designed for service at higher temperatures, but can tolerate short-term exposures.<\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-bottom:.0001pt\">&nbsp;<\/p>\n<p style=\"margin-bottom:.0001pt\"><span style=\"line-height:normal\"><span style=\"font-size:12.0pt\">To view Haynes data, please<a href=\"https:\/\/www.haynesintl.com\/alloys\/alloy-portfolio_\/High-temperature-Alloys\/haynes-244-alloy\" target=\"_blank\" rel=\"noopener\"> click here<\/a>. <\/span><\/span><\/p>\n<p style=\"margin-bottom:.0001pt\">&nbsp;<\/p>\n<p style=\"margin-bottom:.0001pt\"><span style=\"line-height:normal\"><span style=\"font-size:12.0pt\"><a href=\"http:\/\/www.haynesintl.com\">www.haynesintl.com<\/a><\/span> <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Haynes International, Kokomo, Ind., announces that it has new alloy data for Haynes 244, a new Ni-Mo-Cr-W alloy developed for static parts in advanced gas turbine engines that require low thermal expansion at temperatures up to 1400\u00b0F.<\/p>\n","protected":false},"author":63082,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[444,440,441,1],"tags":[],"class_list":["post-8364","post","type-post","status-publish","format-standard","hentry","category-aerospace-and-defense","category-news","category-news-articles","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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