The coins are currently made from the nickel and copper alloy cupro-nickel.
He said the copper alloy fragments could be linked to a metal disc found with the original hoard by metal detectorist, Terry Herbert, in July 2009.
The man is thought to have been buried fully clothed as shown by the preserved hobnails from his boots and a copper alloy earring found near his skull.
Many French horns, for example, are made of nickel silver, an alloy of copper, zinc, and nickel (it's silver in name and color only), and some are made of nickel bronze, an alloy of copper, tin, and nickel. (Brass itself is an alloy of copper and zinc.) Many brass instruments are silver-plated (sterling silver on brass), and some are gold-plated.
The copper-alloy mirror is similar to the Portesham Mirror - already part of the museum's collection - which was acquired in 1994.
On July 3rd officials in the city of Shifang in Sichuan province announced that a planned copper-alloy plant would no longer be built after local residents demonstrated on the streets against it.
The use of maillechort, a tarnish-resistant, creamily beautiful but easily marred alloy of copper, zinc and nickel, sometimes also called "German silver, " for the plates and bridges is a case in point.
Exactly what that copper content is is debatable: various sites give brass or bronze as the alloy and with different copper contents.
The vases, about 10 inches high and three inches in diameter, are made of bronze, an alloy rich in copper.
Helium-cooled superconducting coils, typically made of an alloy of niobium and titanium encased in copper cladding, create magnetic fields ten times stronger than similar-size permanent magnets can muster.
The Treasury plans to make the new coins from nickel-plated steel instead of the alloy, which has become more expensive as the price of copper has risen in recent years.
In the materials group, Reliance Steel, one of the largest U.S. metals service centers, distributes a line of more than 100, 000 metal products, including carbon, alloy, stainless and specialty steel, aluminum, brass as well as copper products.
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