generaly speaking magnets will not attract none ferious metals, aluminum, copper, brass, bronze and other such alloys, it will also not attract stainless steel that has a very high chromium level.
Most planes (military or not) are made primarily of aluminum because of its light weight compared to steel. High performance jets use more exotic alloys of aluminum, titanium and magnesium.
Non-metals are elctron donors; metals are electron receivers. Non metals predominantly produce covalent bonds when bonding with other non-metals, metals produce ionic bonds when bonding with non-metals. Metals don't bond with each other, but form all...