1.Introduction

Monel 400 is a kind of corrosion resistant alloy with the largest dosage, the most extensive use and the

best comprehensive performance.This alloy has excellent corrosion resistance in hydrofluoric acid and

fluorine gas medium and good corrosion resistance to hot concentrated alkali liquor.It is also resistant to

corrosion of neutral solutions, water, sea water, atmosphere and organic compounds.One of the important

characteristics of the alloy is that it generally does not produce stress corrosion cracks and has good

cutting performance.

2.National standards and common names

3.Mechanical property

strength of extension:σb≥450Mpa

yield strength:σb≥170Mpa

ductility:δ≥30%