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Bonjour à tous
Beaucoup de boitiers de montres anciennes sont en acier "Staybrite".
Quelles sont les qualités/inconvénients de cet acier?
Y a t-il des précautions particulières à prendre pour son entretien?
Merci pour vos judicieux conseils et bonne journée. :cheers:Bonjour St Ex,
Cet acier est proche de l’Inox et se polit mieux mais il n’est pas totalement inaltérable. Un petit nettoyage au simple savon lui rend son brillant et la transpiration ne l’attaque pas outre mesure.
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Contraria contrariis curantur. (Les contraires se guérissent par les contraires).Un texte explicite sur le sujet, je retrouve plus le lien….
The British steel mill, Firth Brown, introduced this stainless steel over eighty years ago in the early 1920s to Swiss watch makers for making the cases and the straps. A 12 chrome 12 nickel steel, the Staybrite D.D.Q., became the standard material for almost 50 years. In fact, the first man on the moon, Neil Amstrong, wore an Omega Speedmaster wristwatch made of Staybrite Steel D.D.Q. in 1969.
…In the sixties and seventies the 304 and 304L were also used for making watch cases but this quality proved less corrosion resistant and had to be replaced. In Switzerland the 1.4435 with higher nickel and molybdenum content became the standard whereas in Asia the classic 1.4404 (316L) is still used. Over the last 20 years the production process of the Staybrite 1.4435 has been optimised to make the steel even more suitable for its application. In line with these developments, Firth, now a member of the Hempel Special Metals Group, has introduced the Staybrite 1.4435Ncu, a stainless steel which has been developed to meet high quality standards regarding corrosion resistance, ‘polishability’ and workability of the material and has been patented accordingly.
Today you can find wristwatches with large polished surfaces, something which was less common a few years ago. The introduction of new grades of stainless steels and developments in the production process from watch manufactures have meant that it is now in fact very difficult to tell the difference between a stainless steel watch and on made of a precious metal. Stainless steel does have a number of advantages though, despite its incognito appearance: it is harder than precious metals and of course less expensive.…Today approximately 13 million Swiss wristwatches are made out of stainless steel which represents 50% of all Swiss watches. Compared to the total amount of watches produced annually around the world (hundreds of millions), this may seem only a small percentage, but not if you note that Swiss watches have a market share of around 80%!
Amicalement.
- St Ex 2/33 a écrit:
MERCI POUR VOS ECLAIRCISSEMENTS.
Le lien en pdf, page7:
http://www.stainless-steel-world.net/pdf/news_its_SteloyCasting.pdf
On y apprend qu’ Antiquorum a vendu une PP staybrite 1.669.318 usd en 2004…. record dans la catégorie!
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