Aloyi 625 (UNS N06625) ndi nickel-chromium-molybdenum alloy ndi kuwonjezera niobium. Kuphatikiza kwa molybdenum kumagwira ntchito ndi niobium kulimbitsa matrix a aloyi, kupereka mphamvu yayikulu popanda kulimbitsa kutentha. Aloyiyi imalimbana ndi madera osiyanasiyana owononga ndipo imakhala ndi mphamvu yolimbana ndi kuipitsidwa ndi ming'alu. Alloy 625 imagwiritsidwa ntchito popanga mankhwala, zakuthambo ndi zam'madzi zamafuta & gasi, zida zowongolera kuipitsidwa ndi zida zanyukiliya.