brasen, brass, chain, copper, fetter (of brass), filthiness, steel

“Brass” From Boyd’s Bible Dictionary:

An alloy of copper and zinc, not known to the Jews. The brass of Scripture was probably copper, or a copper alloy (Gen. 4:22; Deut. 8:9; Judg. 16:21; 2 Kings 25:7; 1 Sam. 17:5; Job 28:2; 1 Cor. 13:1).

“Fetters” From Boyd’s Bible Dictionary:

(shackles). Instruments of brass or iron for fastening feet of prisoners (Psa. 105:18; 149:8).

“Steel” From Boyd’s Bible Dictionary:

Hebrews were not acquainted with carbonized iron, or steel
Wherever the word is found in Scripture, copper is meant (Psa. 18:34).

“Brass” From Concise Bible Dictionary:

As “brass” is a compound, it is probable that copper is the metal often alluded to in scripture. See Deuteronomy 8:9. In some cases it may be “bronze,” as it is known that this was in use in ancient Egypt. The Hebrew word nechosheth is translated “copper” in Ezra 8:27, where it is said to be “precious as gold.” Brass is used as a symbol for righteousness according to the claims of God upon man, as in the brazen altar; the Lord as seen in the vision in the Revelation has feet like fine brass, “burning as in a furnace:” that is, righteous judgment according to responsibility (Rev. 1:15; Rev. 2:18).
Copper bracelet with two brass brands—1900s—US

“Copper” From Concise Bible Dictionary:

See BRASS.

“Fetters” From Concise Bible Dictionary:

Shackles – (from sometime before 1860)
Shackles for the feet. It is said of Joseph that his feet were hurt with fetters (Psa. 105:18). They are spoken of as being made of brass and of iron (Judg. 16:21; 2 Sam. 3:34; 2 Kings 25:7; Job 36:8; Psalm 149:8; Mark 5:4; Luke 8:29).
Shackles – (from sometime before 1860)

Strong’s Dictionary of Hebrew Words:

Transliteration:
nchosheth
Phonic:
nekh-o’-sheth
Meaning:
for 5154; copper, hence, something made of that metal, i.e. coin, a fetter; figuratively, base (as compared with gold or silver)
KJV Usage:
brasen, brass, chain, copper, fetter (of brass), filthiness, steel