Iron grates are often a lot more difficult to maintain due to how easy they rust, and you'll be needed to put some cooking oil on the grate to fill the little pores that are most subject to rust.
Iron grates ay madalas ng maraming mas mahirap upang mapanatili dahil sa kung gaano kadali nila kalawangin, at makikita mo na kailanganin upang ilagay ang ilang mga cooking langis sa lagyan ng rehas upang punan ang maliit na pores na karamihan napapailalim sa kalawang.