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Judaic
Online store that
provides a wide selection of all types of Judaica,
Jewish gifts, Jewish books, Jewish ritual items and
more
www.judaic.com
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 Sterling
silver is an alloy of silver containing 92.5% pure
silver and 7.5% other metals, usually copper. The
minimum millesimal fineness is 925.
Fine silver (99.9% pure) is generally too soft for
producing large functional objects, and in Sterling
the silver is usually alloyed with copper to give
strength whilst preserving the ductility of the silver
and a high precious metal content. Other metals can
replace the copper, usually with the intent to improve
various properties of the basic sterling alloy such as
reducing casting porosity, eliminating firescale, and
increasing resistance to tarnish. These replacement
metals include germanium, zinc, platinum as well as a
variety of other additives including silicon and
boron. A number of alloys claiming firescale and/or
tarnish resistance have appeared in recent years
sparking heavy competition between the various
manufacturers and their different formulations. No one
alloy has emerged as an industry leader or standard
and ongoing alloy development is a very active area. |
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