Inconel 625 jẹ iṣẹ-giga nickel-chromium-molybdenum alloy ti a mọ fun agbara giga rẹ, iwọn otutu ati idena ipata. Superalloy yii jẹ akọkọ ti nickel (o kere ju 58%), atẹle nipasẹ chromium, molybdenum, niobium, iron, tantalum, cobalt, ati awọn oye itọpa ti manganese, silikoni, aluminiomu, ati titanium.