Not true. For example some…
Not true. For example some Duplex steels are extremely corrosion resitant, but still ferromagnetic, high alloyed ferritic steels are comparable to 316,but magnetic. Austentic steels become ferromagnetic when cold worked to higher strength, as is the case in Cybertruck panels. These cars will corrode bcs. crevice corrosion ie. moisture and lack of oxygen between sticker and the panel. Brake dust and road dust has iron particles and when those get into steel surface it will rust and initiate corrosion on SS.