Carefull, what people think is stainless steel is often just chrome electroplated steel. Ex. some cutlery and antennae on automobiles. That might explain the "magnetic" qualities of some "stainless steels". It is mostly the nickel in stainless steel that give it its "non-corrosion" properties. Nickel is non-ferrous (obviously!) and non-magnetic.
Bob P.
Bob P.