'Steel' in the Bible

They had breast-plates which seemed to be made of steel; and the noise caused by their wings was like that of a vast number of horses and chariots hurrying into battle.

cargoes of gold and silver, of jewels and pearls, of fine linen, purple and silk, and of scarlet stuff; all kinds of rare woods, and all kinds of goods in ivory and in very costly wood, in bronze, steel and marble.