'Iron' in the Bible

Take for yourself an iron pan, and set it for a wall of iron between you and the city: and set your face toward it, and it shall be besieged, and you shall lay siege against it. This shall be a sign to the house of Israel.

Son of man, the house of Israel is become dross to me: all of them are brass and tin and iron and lead, in the midst of the furnace; they are the dross of silver.

As they gather silver and brass and iron and lead and tin into the midst of the furnace, to blow the fire on it, to melt it; so will I gather you in my anger and in my wrath, and I will lay you there, and melt you.

Tarshish was your merchant by reason of the multitude of all kinds of riches; with silver, iron, tin, and lead, they traded for your wares.

Vedan and Javan traded with yarn for your wares: bright iron, cassia, and calamus, were among your merchandise.