The word(s) "iron" appears 84 time(s) in 77 verse(s) in Quran in Muhammad Habib Shakir translation.

(61) So Allah protected him from the evil (consequences) of what they planned, and the most evil punishment overtook Firon's people:

(62) The fire; they shall be brought before it (every) morning and evening and on the day when the hour shall come to pass: Make Firon's people enter the severest chastisement.

(63) And certainly We sent Musa with Our communications to Firon and his chiefs, so he said: Surely I am the apostle of the Lord of the worlds.

(64) And Firon proclaimed amongst his people: O my people! is not the kingdom of Egypt mine? And these rivers flow beneath me; do you not then see?

(65) And certainly We tried before them the people of Firon, and there came to them a noble apostle,

(66) From Firon; surely he was haughty, (and) one of the extravagant.

(67) And Ad and Firon and Lut's brethren,

(68) And in Musa: When We sent him to Firon with clear authority.

(69) And certainly the warning came to Firon's people.

(70) Certainly We sent Our apostles with clear arguments, and sent down with them the Book and the balance that men may conduct themselves with equity; and We have made the iron, wherein is great violence and advantages to men, and that Allah may know who helps Him and His apostles in the secret; surely Allah is Strong, Mighty.