Information AboutFineness |
| CATEGORIES ABOUT FINENESS | |
| metallurgy | |
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A traditional measure for the fineness of silver in Britain is the Mass of the amount of silver in 12 Troy Ounce s of the resulting alloy. Britannia Silver has a fineness of 11 troy ounces, 10 Pennyweight s, or about 95.83% silver, whereas Sterling Silver has a fineness of 11 troy ounces, 2 pennyweights, or about 92.5% silver. In other locations fineness is measured in units of mass per thousand. In the United States , silver coins often had a fineness of 900, meaning 90% silver and 10% copper. The fineness (or purity) of Gold is commonly measured in Carats Or Karats . The upper end of the scale is 24 carat for 100%. Thus 18 carat = 18/24% = 75%. SEE ALSO |
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