The high alloy content of Alloy 625 enables it to withstand a wide variety of corrosive environments. The alloy is almost completely resistant to mild environments such as the atmosphere, fresh water and seawater, neutral salts, and alkaline media. In more severe environments, the combination of nickel and chromium provides resistance to reducing conditions. The molybdenum content also makes Alloy 625 highly resistant to pitting and crevice corrosion. The high nickel content provides freedom from chloride stress-corrosion cracking.