Nivarox

Nivarox ( non- variable oxydfest ) is a technology developed around 1933 by Reinhard Straumann metal alloy which is mainly used in the watch industry. The alloy consists of nickel, chromium, manganese, titanium, beryllium, silicon, and iron has properties which are in the manufacture of drive springs and balance springs advantageous. Springs from Nivarox are tiring, almost non-magnetic, non-corrosive and have a very low thermal expansion coefficient.

Nivarox the formulation consists of Straumann by mass 39% nickel, 8% chromium, 1% manganese, 1% titanium, <1% beryllium and 0.5% silicon, the balance being iron. The present composition of Nivarox ( and Nivaflex ), however, consists of 40-45 % cobalt, 21-27 % nickel, 12-18 % chromium, 4% molybdenum, 4% tungsten, 0.3 % beryllium, < 0.1% carbon, the balance being iron.

Nivarox makes the transition behavior of mechanical watches stable and virtually temperature neutral. Due to these special characteristics, the complex and expensive compensation balance could be replaced. Balance springs from Nivarox are now used by almost all manufacturers of mechanical watches in different levels of quality worldwide.