Magnetic property depends
Its magnetic property depends on what other components of this alloy are nickel, magnesium, carbon, nitrogen, molybdenum. Any steel alloy with nickel is not magnetic (nickel strengthen stainless characteristic of iron and chromium alloy). Medical grade SS usually uses nickel and chromium so its not magnetic. Alloys only with chromium (no nickel) are magnetic. Different combinations of components define magnetic power of alloy. Some parrots owners say that bright super glossy SS birds cages (shiny almost mirror-like looking surfaces) made their parrots very exited (even agitated) it may make sense to look for SS cages that have less lustrous finish polished surface with subdued mat tone electro-polishing usually does just that.