Imoda 400 yi-Nickel-Coper Allorety, ikakhulu idityaniswe nge-nickel (malunga ne-63%) kunye nobhedu (malunga ne-28-34%), kwaye iqulethe imali encinci yentsimbi, i-manganese, ikharbon kunye nesilicon. Eli alloy lisetyenziswa ngokubanzi kwimimandla eyahlukeneyo yeshishini ngenxa yokunganyangeki kwe-corosions yayo kunye neepropathi zoomatshini.
