Nivaflex Explained

Nivaflex is an octavariant alloy important in watchmaking, used primarily for the mainspring.[1] The name was registered as a trademark in 1957 by Reinhard Straumann, a Swiss metallurgist.[2] [3] Nivaflex is "wholly non-magnetic" and displays a very low coefficient of thermal expansion.[4] Its composition is of 45% cobalt, 21% nickel, 18% chromium, 5% iron, 4% tungsten, 4% molybdenum, 1% titanium and 0.2% beryllium; carbon content is less than 0.1 percent of the alloy's weight.[5]

Notes and References

  1. News: Brunner . Gisbert . Throwing A Curve: The How, What, When, Where and Why Of Mainsprings . Watchtime . Ebner Publishing International . 18 April 2015.
  2. News: Müller . Reto . Reinhard Straumann . Historischen Lexikons der Schweiz . 29 June 2012.
  3. News: Nivaflex - 132272 . ipaustralia.com.au . 24 August 2012.
  4. News: Nivaflex 45/5 Wire . 3 April 2021 . Jacques Allemann SA.
  5. News: Forster . Jack . In-Depth Consider The Mainspring . Hodinkee Inc . 6 January 2020.

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