Glucidur ou glucydur

Alliage très élastique, dur, amagnétique, inoxydable, dont on fait des balanciers monométalliques, des assortiments (échappements), des spiraux.

Le balancier en glucydur se compose d’un alliage de cuivre auquel on ajoute trois pour cent de béryllium et environ 0,5 pour cent de nickel. On le reconnaît à sa couleur dorée.

Glucydur is a multi-metallic alloy, used in the watch industry for building different parts of the mechanism.

Glucydur is an alloy of beryllium, copper and iron. Due to such properties as hardness, resistance to deformation, damage or magnetic fields and its stability this alloy is perfect for making balance wheels for watches' mechanisms. Glucydur is also resistant to corrosion; it is rather inert chemically. Due to these qualities it is extensively used in producing antimagnetic watches.

Glucydur was developed about the same time with another non-magnetic material - Nivarox.