Monel 400 is a kind of corrosion resistant alloy with the largest dosage, the widest application and excellentcomprehensive performance. This alloy has excellent corrosion resistance in hydrofluoric acid and fluorogas mediumand also has excellent corrosion resistance to hot concentrated lye. lt is also resistant to corrosion of neutral solution.water, seawater, atmosphere and organic compounds. An important characteristic of this alloy is that it generally does notproduce stress corrosion crack and has good cutting performance