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Dear Friends

I was in the window manufacturing business for over twenty years, but our business had nothing to do with pots. Our windows (and curtainwall) used aluminum extrusion.

Pots, to the best of my knowledge, are formed by a CASTING process.

In both cases, anodizing is a way of drawing a thin layer of oxide out of the aluminum. In a way, it is like getting the aluminum to rust (to borrow the word from the world of steel and iron) which protects the rest of the aluminum below the surface.

So, my answer: half the world's pots and pans are made from aluminum, but that doesn't mean they are anodized. Maybe they are, and maybe they aren't. In the window business, we sometimes anodized the aluminum, but just as often it was painted. Whether or not it was painted or anodized was the choice of the purchaser of the products, or more often specified by the architect on the project.

BOTTOM LINE: don't confuse aluminum with the anodizing process. Anodizing is but one way of finishing aluminum. Painting is unquestionably another.

Normally, an anodic (anodized) coating is silver. This is the 'natural' finish of anodizing. Alternatively, the applicators can make different colours of anodizing. You will often see a 'bronze' (dark-brown) colour on a door in a commercial building, restaurant, school, etc.

I believe(this is not my area of expertise; you could check this out on Alcoa's web-site or Kawneer's) this is done by including different chemicals during the anodizing process. In fact, they can produce virtually every shade of anodizing. As well, anodizing can be done in combination with application of dyes, to elicit a range of 'rainbow' (blue, red, green, etc) colours. However, in the window business, these are very rarely done, because the colours are inconsistent, and the process it very expensive. This is why (high-quality) paint finishes are much more the norm in modern-day architecture.

So to answer your question: the pots are aluminum (unless you find that they're magnetic -- then they're steel or copper) but they may not have an anodic finish.

Fred from Toronto, Canada

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17y ago

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