Question about MIL Mi-4

Hello
I’m just finishing work on the Mil Mi-4 helicopter model, specifically its wreck. The entire helicopter will be covered in rust. I am asking for help with the main rotor and blades because I don’t know if I can also cover them with rust or just dust.
Thank you for Your help
Christopher

Actually, most of it will not rust as it is mostly made out of aluminum alloys. It will just sort of tarnish and get really dull with heavily weathered paint. All the glass and soft/cloth items would most likely be gone as well.

Some examples:




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When aluminum oxidizes, it will get a powder like white/gray surface over the bare metal. Similar texture to oxidation/rust on a ferrous metal, but a different color.