Home > categories > Minerals & Metallurgy > Magnetic Materials > 1a. Why is some iron materials non-magnetic while other iron materials are magnetic?
Question:

1a. Why is some iron materials non-magnetic while other iron materials are magnetic?

1b. How can non-magnetic iron be made magnetic? Can you answer both questions, please?Thank you in advance.

Answer:

I think TXm42 deserves best answer. But I think the letter 'B' in this case indicates a bias-ply tire, as opposed to a radial belted tire, where the letter would indicate the speed rating.
H –?speed rating 130mph V –?speed rating 130mph M –?speed rating 81mph (don't know MV) There should also be a 2 numeral figure before the letter that is the load index.
Those letters are the speed rating of the tire; basically, what the safest maximum speed for those tires.
1a) Some are magnetic because of the orientations of their atoms (the magnetic ones have all their atoms lined in one direction). The other ones are disordered. 1b)Non-magnetic iron can be made magnetic by 'lining up' the atoms--one way is to stroke the material in one direction over and over with a magnetic material, which will realign the atoms.
cause they arent iron, most likely an alloy or coated by some other non magnetic material

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