With a project I'm working on, I need to reinforce a small case made of aluminium. My options are to use regular old screws (probably steel) or Stainless Steel screws (much more costly). Just wondering what corrosion will be like? *It will never ever get wet,* so does that mean corrosion will not occur? (to a certain degree, obviously) And would corrosion, since its dry, still be affected by the type of metal used for the screws? The screws need to be strong, and they also need to be purchase-able at a regular hardware store, as I'm not going to go buying just screws on-line. Thanks for any info you can provide.
You don't mention just what this project is, but 'regular' screws in the aluminum will not 'rust' - but they may cause galvanic action (a white powdery aluminum oxide may form over time.) Most hardware stores carry aluminum screws, why not just buy and use them if you are concerned? They are usually used for aluminum replacement windows and may be painted white. You can use sandpaper to remove the paint if you want the silver to show.
Rivets would be best or enameled steel screws could be second choice.
