Verse Quran
17:50 Say: "(Nay!) be ye stones or iron.
18:96 "Bring me blocks of iron." At length, when he had filled up the space between the two steep mountain-sides, He said, "Blow (with your bellows)" Then, when he had made it (red) as fire, he said: "Bring me, that I may pour over it, molten lead."
22:21 In addition there will be maces of iron (to punish) them.
34:10 We bestowed Grace aforetime on David from ourselves: "O ye Mountains! Sing ye back the Praises of Allah with him! and ye birds (also)! And We made the iron soft for him;.
40:71 When the yokes (shall be) round their necks, and the chains; they shall be dragged along.
57:25 We sent aforetime our messengers with Clear Signs and sent down with them the Book and the Balance (of Right and Wrong), that men may stand forth in justice; and We sent down Iron, in which is (material for) mighty war, as well as many benefits for mankind, that Allah may test who it is that will help, Unseen, Him and His messengers: For Allah is Full of Strength, Exalted in Might (and able to enforce His Will).
76:4 For the Rejecters we have prepared chains, yokes, and a blazing Fire.

The Quran's Verse about iron

test, sea, skin, camel, dumb, birth, pig, friend, prayer, lip, widow, smoke, wall, earth, amusement, dragon, bread, dress, deposit, order,