Comment on Is it safe to use pans with peeling nonstick coating?
Bonehead@kbin.social 11 months agoAluminum is porous. Hard anodized aluminum is not. That's the whole point of anodizing the aluminum, so that it create a barrier that stops it's from reacting with acids.
ironeagl@sh.itjust.works 11 months ago
The barrier to acids comes from oxidizing the surface, which anodizing does. But pores do not exist in bare aluminum, and hard anodize actually has the biggest pores! There is technically a sealer on the surface, but sticking it in hot water can sometimes release it, depending on what sealer was used. Here’s an article with more info: lightmetalage.com/…/introduction-to-anodizing-alu…
Bonehead@kbin.social 11 months ago
That's for general anodizing, not hard anodizing for cookware. They aren't going to use the same process for a chair that will never see water versus a pan designed to be immersed in water. Anodized cookware is fine to use with acids.
stevehobbes@lemmy.world 11 months ago
Nope. It’s exactly the same process - it’s just Type III not type II.
The sealer is what makes it non porous. That sealer is usually teflon that wears off.
Bonehead@kbin.social 11 months ago
It's the exact same process, except that it isn't. Hard anodized aluminum is not teflon.
ironeagl@sh.itjust.works 11 months ago
Can you give me an example? Calphalon for instance have “hard-anodized nonstick” but they’re still teflon. Anodizing is actually how teflon is usually made - the anodizing makes a porous surface that the teflon can stick to. So you’right that the sealer is different, it’s just teflon.
Bonehead@kbin.social 11 months ago
https://madeincookware.com/blogs/non-stick-vs-hard-anodized
Hard anodized aluminum is not teflon.