Kayan filastik PEEK-UNFILLED GF, CF don kayan aikin wuta

PEEK wani thermoplastic ne na kristal mai kyawu tare da ingantattun kayan juriya na inji da sinadarai waɗanda aka kiyaye su zuwa yanayin zafi. Yanayin sarrafawa da aka yi amfani da shi don ƙirƙirar PEEK na iya yin tasiri ga crystalline kuma saboda haka kayan aikin injiniya. Matsakaicin Matashinsa 3.6GPa kuma ƙarfin taurinsa shine 90 zuwa 100 MPa.[5] PEEK yana da zafin canjin gilashin kusan 143 °C (289 °F) kuma yana narkewa a kusa da 343 ° C (662 ° F). Wasu maki suna da zafin aiki mai amfani har zuwa 250 °C (482 °F).[3] Ƙarƙashin zafin jiki yana ƙaruwa kusa da layi tare da zafin jiki tsakanin zafin ɗaki da zafin jiki mai ƙarfi.[6] Yana da matukar juriya ga lalatawar thermal,[7] da kuma kai hari ta wurin mahalli da matsugunan ruwa. Ana kaiwa hari da halogens da Bronzed acid mai ƙarfi da Lewis acid, da kuma wasu mahaɗan halogenated da kuma hydrocarbons aliphatic a yanayin zafi mai zafi. Yana narkewa a cikin sulfuric acid mai daɗaɗɗa a cikin zafin jiki, ko da yake narkar da na iya ɗaukar lokaci mai tsawo sai dai in polymer ɗin yana cikin wani nau'i mai girman girman yanki-zuwa girma, kamar foda mai kyau ko fim na bakin ciki. Yana da babban juriya ga biodegradation.