'Iron' in the Bible

Now therefore send me a man skilful to work in gold, and in silver, and in brass, and in iron, and in purple, and crimson, and blue, and that knoweth how to grave all manner of gravings, to be with the skilful men that are with me in Judah and in Jerusalem, whom David my father did provide.

the son of a woman of the daughters of Dan; and his father was a man of Tyre, skilful to work in gold, and in silver, in brass, in iron, in stone, and in timber, in purple, in blue, and in fine linen, and in crimson, also to grave any manner of graving, and to devise any device; that there may be a place appointed unto him with thy skilful men, and with the skilful men of my lord David thy father.

And Zedekiah the son of Chenaanah made him horns of iron, and said, Thus saith Jehovah, With these shalt thou push the Syrians, until they be consumed.

And the king and Jehoiada gave it to such as did the work of the service of the house of Jehovah; and they hired masons and carpenters to restore the house of Jehovah, and also such as wrought iron and brass to repair the house of Jehovah.