I would also wager that there is very little magnetic steel is used in the construction of spacecraft. Most grades of stainless steel, are not magnetic, and nei

I would also wager that there is very little magnetic steel is used in the construction of spacecraft. Most grades of stainless steel, are not magnetic, and neither are aluminum and titanium are not magnetic. Very, very little carbon steel is used in modern commercial aircraft, and I would imagine an order of magnitude less would be used on a spacecraft.