'Iron' in the Bible

"At any rate, send me an individual who is a skilled craftsman in gold, silver, bronze, and iron, as well as in purple, crimson, and blue materials, who knows how to craft engravings, so he may work with the craftsmen whom I have assembled in Judah and Jerusalem, as provided for by my father David.

He is the son of a mother from the tribe of Dan, and his father is from Tyre. He's skilled in working with gold, silver, bronze, iron, stone, and timber, as well as in purple, blue, linen, and crimson materials. He is skilled in engravings, and can craft any design to which he may be assigned. He will work with your skilled artisans and with all of your craftsmen who have been assigned by my lord David, your father.

Chenaanah's son Zedekiah made iron horns for himself and told them, "This is what the LORD says, "With these horns you are to gore the Arameans until they are eliminated!'"

Both the king and Jehoiada paid the money to those who were working to maintain the service of the LORD's Temple, and they, in turn, hired masons and carpenters to restore the LORD's Temple. Iron and bronze workers also were brought in to repair the Lord's Temple.