I-alloy 400 isetyenziswa ngokubanzi kwiinkalo ezininzi, ingakumbi elwandle kunye nokulungiswa kweekhemikhali. Ukusetyenziswa okuqhelekileyo ziivalvu kunye neepompo; impompo kunye ne-propeller shafts; izixhobo zaselwandle kunye nezibophelelo; izinto zombane neze-elektroniki; imithombo; izixhobo zokulungisa imichiza; iitanki zepetroli kunye namanzi amatsha; izixhobo zepetroleum ekrwada, zilungise iinqanawa kunye nemibhobho; izifudumezi zebhoyila yamanzi kunye nezinye izifudumezi zobushushu; kunye nezifudumezi ezidayayo.