The “bow of steel” in (A.V.) 2 Sam. 22:35; Job 20:24; Ps. 18:34 is in the Revised Version “bow of brass” (Heb. kesheth-nehushah). In Jer. 15:12 the same word is used, and is also rendered in the Revised Version “brass.” But more correctly it is copper (q.v.), as brass in the ordinary sense of the word (an alloy of copper and zinc) was not known to the ancients.
Steel
2 verses
2 Samuel
2 Samuel 22:35
He teacheth my hands to war; so that a bow of steel is broken by mine arms.
Job
Job 20:24
He shall flee from the iron weapon, and the bow of steel shall strike him through.
From Easton's Bible Dictionary
Matthew George Easton, 1897