Gilding metal
Gilding metal is a form of brass (an alloy of copper and zinc) with a much higher copper content than zinc content. Exact figures range from 95% copper and 5% zinc[1] to “8 parts copper to 1 of zinc” (11% zinc) in British Army Dress Regulations.[2]
Gilding metal is used for various purposes, including the
shell casings made of gilding metal were melted down by the United States Mint to be made into pennies.[4] These pennies replaced the less popular steel cent
of 1943, and the pennies of this composition were produced until 1946.
Gilding metal was also used for the "bronze" Olympic medal at the 2020 Summer Olympics held in Tokyo, Japan in 2021.[5]
Gilding metal may be
cracking.[7]
See also
- Pinchbeck alloy
References
- ^ ISBN 0-7091-0723-4.
- HMSO. p. 4
- ^ "105mm Advanced Cannon Artillery Ammunition Program (ACA2P) § 155mm M107". Archived from the original on 7 March 2007.
- ^ "1943 Steel Cent | Lincoln Steel Penny". Retrieved 2019-04-23.
- ^ "How much are Olympic medals worth?". CNN. Retrieved 2021-08-01.
- ^ Untracht, p. 49–50
- ^ Untracht, p. 246
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