steel is tsel

tsel = steel (noun) (metal alloy)

Some things Google found for "tsel":
Tsel is a rare last name, Igor Tsel is a Kazakhstani fencer. The Tsel Harim Dead Sea Hotel in Israel. In Hebrew (transliterated) tsel means shadow. Trang Tsel is a Tibetan salad.

Word derivation for "steel" :
Hungarian = acél (which I transliterate to atsél)
Finnish = teräs
Samgur = tsel

brass is mesigär

mesigär = brass (noun) (metal alloy)
alternate spelling: mesigaer

Some things Google found for "mesigar":
Mesigar is a rare last name.

Word derivation for "brass" :
Hungarian = sárgaréz (which I transliterate to shárgaréz
Finnish = messinki
Samgur = mesigär

bronze is bronis

bronis = bronze (noun) (metal alloy)

Some things Google found for "bronis":
Bronis is an unusual last name. Bronis is a rare usually masculine first name, probably a form of Bronislaw. Similar Bronisin is the name of a place in Poland.

Word derivation for "bronze" :
Hungarian = bronz
Finnish = pronssi
Samgur = bronis