Increased ductility of Argentium Silver
Measuring ductility - the Erichsen Cupping Test
Cynthia Eid demonstrates the ductility of Argentium Silver
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Measuring ductility - the Erichsen Cupping Test
Ductility is an important property in any alloy that has to be shaped by forming processes such as hammering, stamping, spinning and drawing. The Erichsen Cupping Test is used to measure ductility. The metal is domed until the point of fracture and the depth of the dome is recorded in millimetres as the Erichsen value. The chart (below) shows the Erichsen Cupping Test results for standard sterling silver and Argentium 930 Silver. Argentium 930 Silver is shown to have greater ductility. This means that the metal can be worked longer and further between each annealing, thus decreasing manufacturing time and labour.
Elongation (mm)
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Cynthia Eid demonstrates the ductility of Argentium 930 Silver
'Convergences II' (left) is an example of how the material can be formed.
"I have been working with Argentium Sterling Silver for several years and absolutely love it... It has superior working properties for die forming, fold forming and raising, compared to regular sterling silver - and of course, I don't miss firescale."
Cynthia Eid
Image: 'Convergences II', made in Argentium 930 Silver, by Cynthia Eid
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Related documents
'Increased ductility' data sheet (pdf download)
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