For one thing, there are no stainless steel pans which are magnetic on both the outside AND the inside. There’s a problem with this theory, however. It is true that if a magnet were to stick to the steel, that it would not be a nickel (austenite) alloy. So the “magnet test” is to take a magnet to your stainless steel cookware, and if it sticks, it’s “safe”-indicating no nickel present-but if it doesn’t stick, then it’s not safe, and contains nickel (which is an austenite steel). Both the 18/8 and 18/10 are therefore austenitic. The nickel is the key to forming austenite stainless steel. The first number indicates 18% chromium, and the second 8% or 10% nickel. When you see stainless steel labeled as 18/8 or 18/10 this is telling you how much chromium and nickel is in the steel. There are three main types of structures in stainless steel-austenite, ferrite, and martensite. But really what this tests for, is whether or not the steel is austenitic, or made of a metal alloy which contains chromium and nickel. The theory of the “magnet test,” is sort of this rumor going around in which you’re supposed to test the quality of the stainless steel with a magnet. This is a confusing topic! What’s the deal with magnetic stainless steel? So, let’s start with that whole magnetic thing. You might have even heard it from me-that’s what I thought was the best way to test for quality, too! I’ve since learned some more information that might help you out. Some say it’s only safe if it’s magnetic steel, which it sounds like you’ve heard before. Some say it’s the best thing ever and the only cookware you should use. Some say it leaches dangerous heavy metals into your food. Some say it’s totally safe and non-reactive. This is a topic that a lot of people seem to be unsure about-I know I definitely was for quite a while! You hear so many different things about stainless steel. I try with a magnet and it will stick all over the pan just not inside… How can I make sure they are safe to cook? I’m totally changing my non-stick for more stainless or cast iron. How do I know if they are good quality?… and according to the information they are top quality. Last year I bought a set of stainless steel pans. I was reading your article about cookware. So how do you know if one type of stainless steel is better than another? Is there a way to test stainless steel for quality? Stainless is supposed to be one of the best and safest forms of cookware, but as I’ve said before, quality matters. This week, we’re taking a look at stainless steel cookware.
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