{"id":6665,"date":"2024-09-12T08:17:37","date_gmt":"2024-09-12T08:17:37","guid":{"rendered":"https:\/\/haynesintl.com\/?page_id=6665"},"modified":"2024-09-12T08:18:07","modified_gmt":"2024-09-12T08:18:07","slug":"thermal-stability-of-high-temperature-alloys","status":"publish","type":"page","link":"https:\/\/haynesintl.com\/en\/thermal-stability-of-high-temperature-alloys\/","title":{"rendered":"Thermal Stability of High-temperature Alloys"},"content":{"rendered":"\n

Tensile Ductility after Thermal Exposure<\/h3>\n\n\n\n

Thermal stability is an important design characteristic for engineering materials used at elevated temperatures. It may be defined as the resistance of an alloy to degradation of ductility and toughness when subjected to long-term thermal exposure. One common measurement of thermal stability is residual room temperature tensile elongation following such exposure. The following are test results for both plate and sheet materials exposed for 6,000 to 8,000 hours at different temperatures. Data are averages of at least two tests.<\/p>\n\n\n\n

\n

\n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
\n Alloy <\/td>\n \n Form <\/td>\n \n Room Temperature Tensile Elongation Following 8,000 Hour Exposure at the Indicated Temperature (%)* <\/td>\n <\/tr>\n
\n Room Temperature <\/td>\n \n 1200\u00b0F (650\u00b0C) <\/td>\n \n 1400\u00b0F (760\u00b0C) <\/td>\n \n 1600\u00b0F (870\u00b0C) <\/td>\n <\/tr>\n
\n 230\u00ae<\/sup> <\/td>\n \n Plate <\/td>\n \n 50 <\/td>\n \n 38 <\/td>\n \n 35 <\/td>\n \n 36 <\/td>\n <\/tr>\n
\n S <\/td>\n \n Plate <\/td>\n \n 54 <\/td>\n \n 50 <\/td>\n \n 46 <\/td>\n \n 53 <\/td>\n <\/tr>\n
\n 625 <\/td>\n \n Plate <\/td>\n \n 46 <\/td>\n \n 18 <\/td>\n \n 13 <\/td>\n \n 26 <\/td>\n <\/tr>\n
\n X <\/td>\n \n Plate <\/td>\n \n 47 <\/td>\n \n 18 <\/td>\n \n 20 <\/td>\n \n 26 <\/td>\n <\/tr>\n
\n 188 <\/td>\n \n Plate <\/td>\n \n 56 <\/td>\n \n 29 <\/td>\n \n 11 <\/td>\n \n 22 <\/td>\n <\/tr>\n
\n 556\u00ae<\/sup> <\/td>\n \n Plate <\/td>\n \n 51 <\/td>\n \n 31 <\/td>\n \n 22 <\/td>\n \n 23 <\/td>\n <\/tr>\n
\n 800H <\/td>\n \n Plate <\/td>\n \n 58 <\/td>\n \n 35 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n X <\/td>\n \n Sheet <\/td>\n \n 57 <\/td>\n \n 19 <\/td>\n \n 19 <\/td>\n \n 30 <\/td>\n <\/tr>\n
\n 188 <\/td>\n \n Sheet <\/td>\n \n 62 <\/td>\n \n 32 <\/td>\n \n 9 <\/td>\n \n 15 <\/td>\n <\/tr>\n
\n S <\/td>\n \n Sheet <\/td>\n \n 58 <\/td>\n \n 54 <\/td>\n \n 54 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n 600 <\/td>\n \n Sheet <\/td>\n \n 37 <\/td>\n \n 38 <\/td>\n \n 39* <\/td>\n \n 41* <\/td>\n <\/tr>\n
\n 601 <\/td>\n \n Sheet <\/td>\n \n 47 <\/td>\n \n 30 <\/td>\n \n 41* <\/td>\n \n 43* <\/td>\n <\/tr>\n
\n 800H <\/td>\n \n Sheet <\/td>\n \n 47 <\/td>\n \n 37 <\/td>\n \n 42* <\/td>\n \n 40* <\/td>\n <\/tr>\n <\/table>\n<\/div>