Nivarox (metal alloy)

Nivarox ( Ni CHT var iabel ox ydfest) is a to 1933 of Reinhard Straumann developed metal alloy . This resulted in tension springs and, like the similar Nivaflex , spiral springs. Nivarox is mainly used in the watch industry . The alloy of nickel , chromium , manganese , titanium , beryllium , silicon and iron has properties that are advantageous in the manufacture of balance springs and drive springs . Nivarox springs are fatigue-free, almost anti-magnetic, rustproof and have a very low coefficient of thermal expansion .

The Nivarox -Rezeptur Straumann consists by weight of: 39% nickel, 8% chromium, 1% manganese, 1% titanium, <1% beryllium and 0.5% silicon, the balance being iron. Today's composition of Nivarox (and Nivaflex ) consists of 40-45% cobalt , 21-27% nickel, 12-18% chromium, 4% molybdenum , 4% tungsten , 0.3% beryllium, <0.1% carbon , the rest of iron.

Nivarox makes the rate behavior of mechanical watches stable and almost temperature-neutral. Thanks to these special properties, the complex and expensive compensation balance could be replaced. Today, balance springs made of Nivarox are used worldwide by almost all manufacturers of mechanical watches in various quality levels. The improvement of the material is continuously being developed.

Individual evidence

The connections

1. ^ Precision Engineering AG history. Retrieved December 11, 2016.
2. ^ Helmut Kahlert , Richard Mühe , Gisbert L. Brunner : Wristwatches: 100 years of development history . Callwey, Munich 1983; further edition 1990, ISBN 978-3-7667-0975-2 ; 5th, expanded edition, ibid. 1996, ISBN 3-7667-1241-1 , p. 34 f. and 38.
3. ↑ Fritz von Osterhausen: Callweys lexicon. Munich 1999, ISBN 3-7667-1353-1 ; P. 225
4. ↑ Info clock materials. Retrieved December 11, 2016
5. ^ Precision Engineering AG ( Memento from June 15, 2014 in the Internet Archive ) Material PE 3000. Retrieved on December 11, 2016
6. ^ Precision Engineering AG Material PE 4000. Retrieved December 11, 2016.