A304 ígwè akwa nwere ọtụtụ ezigbo ihe na-eme ya nhọrọ zuru oke. Ọ nwere ezigbo usoro, ike tens dị elu, owuwu oke, elu elu elu gwụchara, ma nwee ike iguzo oke ibu \ / dị elu okpomọkụ \ / elu. Ngwongwo ndị ọzọ dị mma dịka ịdị ogologo dị ukwuu, na-eguzogide ike na-efe, oxiding, nrụgide corrosion, corrosion corrosion na-eme ka ọ dị irè.