Glucydur is a beryllium bronze; an alloy of beryllium, copper and iron. In addition to its low coefficient of thermal expansion, its hardness (400 Brinell), nonmagnetizability, and resistance to deformation and damage make it suited for making precision parts that must have high dimensional stability. Glucydur is also resistant to corrosion; it is rather inert chemically.
Glucydur was developed about the same time with another non-magnetic material, Nivarox.
- Odets, Walt (2007), The Balance Wheel of a Watch, The Horologium,TimeZone.com, <http://www.timezone.com/library/horologium/horologium0013>. Retrieved on June 15, 2007. Technical article on construction of watch balance wheels, on watch repair website.
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