Kamar yadda ake tsammani daga babban abun ciki na jan karfe, gami da 400 na nitric acid da tsarin ammonia suna kai hari cikin sauri.
Monel 400 yana da manyan kayan aikin injiniya a yanayin zafi na ƙasa, ana iya amfani dashi a cikin yanayin zafi har zuwa 1000 ° F, kuma wurin narkewar shine 2370-2460 ° F. Duk da haka, gami 400 yana da ƙarancin ƙarfi a cikin yanayin da ba a taɓa gani ba don haka, fushi iri-iri. ana iya amfani dashi don ƙara ƙarfi.