Most interesting sentence:
> 304 stainless steel isn’t normally magnetic, but it becomes partially ferromagnetic if it’s bent at room temperature.
Anyone have a lay-person explanation for this?
> 304 stainless steel isn’t normally magnetic, but it becomes partially ferromagnetic if it’s bent at room temperature.
Anyone have a lay-person explanation for this?
304 is an austenitic stainless steel, and austenite is non-magnetic. But when it's cold worked, it turns into martensite, which is harder and magnetic. If you anneal it by heating it and letting it cool, it turns back into austenite.
It's the act of physically working it that makes it change structure.