Alloy 625 is a member of Inconel alloys. Inconel alloys are superalloys of chromium and nickel. They perform well under elevated temperatures and high pressure environments. They are very much corrosion resistant. They are resistant to oxidation and reduction, most acids, dry gases under room temperature and are very strong materials in general. There are different grades of the alloy such as theAlloy 625 Grade 1and theAlloy 625 Grade 2which could be used interchangeably. The alloy 625is very much corrosion resistant inside water and outside the aqueous solutions. This property makes it used in nuclear and sea water applications as well. It is much creep resistant than its counterparts. For this reason, the Alloy 625 applications can use heavy welding and yet be pitting and creep corrosion resistant.