posted on Aug, 27 2012 @ 07:17 PM
Originally posted by shantyknight
reply to post by speculativeoptimist
Good topic. And one dear to my heart. If you take a magnet with you next time you go to Wally World (or where ever) and check out the stainless
steel cookware there, you will be surprised. Steel is magnetic. Yet the magnet will refuse to stick to a lot of the stainless steel cookware. I
researched this on line and found out: There is no such thing as Stainless Steel. It is a Trade name. Also, aluminum was never designed for high
heat (like cooking on a stove). It leaches poisonous gasses into the food. They shouldn't even be allowed to SELL this stuff as cookware.
As an aside....Organic health bars from the local health food stores. Wrapped in pretty wrapper, nice green healthy looking background. Open the
bar....yep, wrapped in aluminum foil.
I'm glad you posted this because it's partially correct, but alludes to common misconceptions...
The more austentic (crystaline & low carbon) the stainless steel, the higher the grade or quality & more non-magnetic
the alloy (i.e., 304L,
Some stainless will rust & is
slightly magnetic, esp. low quality; typically, the 301 & 303 grades found in disposable razors. It is not
uncommon to actually have 303sst magnetize during machining & have difficulty removing chips while drilling blind holes.
Mainly, the higher nickel & chromium grade stainless steels are virtually corrosion resistant--& non-magnetic
. Iron & carbon are magnetic.
Nickel & chromium are non-magnetic & make stainless steel stainless steel
On a side note: most car bodies, except Deloreans were carbon steel (sheet metal) & when buying a used car, one could run a magnet wrapped in cloth
across the body to see if it had any plastic or fiberglass filler from previous bodywork or undisclosed collision damage.
Wiki's info is a little thick, but here it is: