I was wondering whether anyone knew if painted steels rusts at the same speed as steel that isn't painted. Also, does steel rust quicker than aluminium?Thank you
Painting a piece of steel will coat it with a protective layer, causing it to not rust (not get oxidised). Aluminum does not rust.
If the steel is properly prepped when painted, then it would last a long time before any rust or corrosion sets in. This still all depends if the item is subjected to water or salt and if the item you painted is not scratched in any way, once exposed from the paint, the rust will begin rapidly. As far as aluminum, no it will not rust, but you do get aluminum oxidation. It gets a white flakey appearance when it begins to oxidize. Now if you are thinking of painting the rims on a car, i recommend scuffing the rim, priming it, lightly sanding and then paint to the color of choice and for the final touch apply a clear coat on the rims to help avoid the rusting. Use a paint such as rustoleum to prolong the effects of rust settling in. good luck..... good luck.....
Rust is the process of steel oxidizing when in contact with oxygen, this reaction can be much fast if certain components are present, such as wet air or water. However, if the paint completely isolates the steel from the environment, the encompassed steel will never rust as long as paint shields it. Aluminum corrodes but it does not rust. Rust refers only to iron and steel corrosion. Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion. Aluminum oxide corrosion also looks a lot more like aluminum, so it isn't as easy to notice as rusted iron.
