FOSTELOLELOY B2 Mapaipi ku magawo osiyanasiyana a acid
Alloy 625 ndi Almomium-chromium-chromium almon omwe amagwiritsidwa ntchito chifukwa champhamvu kwambiri, nsanje labwino komanso kukana kopambana. Kutentha kwa ntchito kumatha kuyambira kwa Chrogenic mpaka 980¡c (1800¡f). Alsoy 625 mphamvu zimachokera ku njira yolimba yolimbikitsira molybdenium ndi niobium pa nickel matrix yake.
FOSTELLOY C-22 ikhoza kugwiritsidwa ntchito molumikizana ndi ntratelloy C-276 kuti mupewe kututa. Mapangidwe ake ndi Nickel-chromium-Molybdenum-Tungsten, napatsa ena mwakutsutsana ndi C-276. Chitsulo ndichabwino kwambiri chotsutsana ndi kutukudwa koyenera komanso koloko komanso mankhwala, oxiyadation, ndikuchepetsa malo. Kuyesa malo okhala ndi chonyowa chlorine chonyowa acid kwatsimikiziranso kuti FOSTELOLOY C-22 akuwonetsa kukana kwapadera. Komabe, khalidwe limodzi lapadera limatha kugwira ntchito, zomwe zimalola zitsulo kuti zizigwiritsidwa ntchito ngati zosefera nthawi zambiri pomwe zitsulo zina zalephera kuyimitsa kututa. Makhalidwe awa amapanga mafinya a F-22 omwe nthawi zambiri amagwiritsidwa ntchito mu mankhwala kupanga chakudya ndi zakumwa zam'madzi.