Glucydur is the trade name of a metal alloy with a low coefficient of thermal expansion, used for making balance wheels and other parts of mechanical watches. [1] Glucydur is a beryllium bronze; an alloy of beryllium, copper and iron.

Glucydur is an alloy of (mostly) berrylium and copper and has excellent hardness and high stability over a range of temperatures. In most watches, the balance wheel is computer poised (and timed to the particular balance spring) and a precise laser cut is made in the underside of the rim (red arrow) to achieve nearly perfect poise.

Jun 18, 2018 · Explaining the advantage of a Glucydur balance over a nickel balance is simple: Glucydur (or beryllium bronze) resists deformation from temperature change or abuse much better than nickel so the balance wheel stays in balance and therefore keeps more consistent time.

Feb 18, 2022 · Glucydur is an old school name for a beryllium copper alloy. It's not a precise definition either, as there have been many different alloys called Glucydur. CuBe alloys are widely available and you can pick the one that tickles your taste buds the best.

Mar 7, 2024 · As I understand it, Glucydur is much harder material than nickel and is utilized in high-grade movements. And the primary statement is that its advantage as a balance wheel material is that it "resists temperature deformation & abuse" better than nickel balance wheels.

Glucydur is an alloy of beryllium and bronze (aka beryllium copper aka BeCu or CuBe on the periodic table of elements) used for balance wheels. The alloy is known for its resistance to thermal expansion, non-magnetic properties and resistance to corrosion.

Feb 8, 2024 · Glucydur (or beryllium bronze) is non-magnetic and resists deforming from temperature changes or abuse much better than steel. After a few years of using the new alloy, watchmakers found the adjustment screws became obsolete if the …

Jun 24, 2024 · Glucydur is used for watch balances. It is an alloy of copper and beryllium. The name Glucydur is derived from glucinium, an old name for beryllium, and dur for durable.

Apr 18, 2023 · Glucydur is a trademarked name for an alloy of beryllium and bronze typically used in balance wheels. The development of Glucydur in the 1930s coincided with that of Nivarox for balance springs and caused a revolution in construction and accuracy of an assortiment.

Mar 7, 2022 · Glucydur is an alloy of copper and 2-3% beryllium. This alloy has particularly good mechanical properties. It is non-magnetic and non-oxidizing and at normal temperatures has only a very small expansion. Therefore, it is preferred for …