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Aug 16, 2011 10:37 AM

Who else chemically *lines* the pots -Demeyere Silvinox

One of the things that has always amazed me is how easy my Demeyere cookware is to clean.
I was looking at their 60QT stockpot and noticed a *tech disclaimer* that noted that out of the entire lineup, the 60 Qt was not finished in Silvinox.

Just curious what other manuf. chemically treats the interior or exterior of the cookware ?

One thing led to another, and Demeyere chemically treats the interior of the SS -- in which they call Silvinox. I found this interesting:

The mat, polished series by Demeyere (Atlantis, Apollo and Athena) are equipped with Silvinox, a unique electro-chemical surface treatment system that was developed some 30 years ago in the Demeyere laboratories.

After exposure to polluted air, some fruits such as apricots, dishwashing detergents or overheating, stainless steel may discolour and become grey, matte or yellow. The electro-chemical Silvinox treatment is designed to prevent this effect.

Finger prints are another problem that is specific to stainless steel products. They are very hard to remove. Stainless steel treated with Silvinox alleviates this problem.

Silvinox, a unique system, enriches the material by removing iron and impurities from the surface and makes sure stainless steel remains silvery white, even after years of use.

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  1. Stainless steel is an alloy (mix) of iron, carbon (which makes it steel), and metals like chromium. Chromium, like aluminum, forms a tough, invisible oxide layer when exposed to air or water. In a stainless steel item, the chromium atoms near the surface form this oxide, which protects the iron atoms from oxidation (rust). As the chromium is worn away, new chromium atoms migrate to the surface and form a new protective layer.

    It sounds as though these pots are immersed in some sort of chemical, probably an acid, which (along with an applied electric current) removes iron atoms from the surface, or otherwise enriches the surface in chromium. The method may be unique for cookware, but there are other applications where resistance to corrosion is even more important. There are industrial environments which are a lot harder on stainless steel than anything in the home.