Silver Bullion - Argentium Sterling
Silver
Argentium sterling silver, the brainchild
of researcher Peter Johns at the School of Art & Design, Middlesex University, is a modern sterling silver alloy patented and trademarked by
the “Argentium Silver Company.” Argentium sterling silver differs from traditional sterling silver in
the sense that some of the copper in the traditional alloy gets replaced with metalloid germanium. It’s however
still referred to as sterling silver. The reason for this is because the silver content in argentium sterling
silver remains at 92.5%.
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“The project began in 1990 with research on the effects of
germanium additions to silver alloys. Germanium was discovered to impart the
following properties to sterling silver:
Many of these properties significantly affect the traditional
methods of working silver. For instance the absence of firescale
eliminates tedious and time-consuming steps required by the silver worker using traditional sterling silver. It also eliminates the need for
plating the final product which is often done on manufactured items because of the problems introduced by
firescale. Tarnish resistance is of significant importance to both silver workers and the wearer of silver jewellery” (Wikipedia).
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Physical properties of Argentium Sterling
Silver…
Solidus melting point of argentium sterling silver: 1410°F
(766°C)
Liquidis flow point of argentium sterling silver: 1610°F (877°C)
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