RV aluminum siding gauge?
The overcab in my 94 Toyota class C is rotted, cannot put off repair much longer. Been reading about this, I would like to use a 4X8 sheet of aluminum and eliminate the front window. I would pre...
Forum Discussion
There are 3 basic grades of Al used for air craft 2024,6061 and 7075. The easiest to roll form is 2024 because it is the softest and also the weakest of the alloys and has the least amount of spring back after it is formed. 7075 is the strongest and hardest to form with the most amount of spring back and 6061 is in the middle. They also come in different tempers like T1-T3. The front section that you are talking about is a wrap section(not a compound curve) meaning it can be just roll formed to shape with out a mold. So any alloy will work. The softer alloy 2024 will dent easier than 7075 so I would use a thicker sht say .050. 7075 I would go with .030. The harder alloys you will have to over bend to allow for the spring back. If you don't have access to a bending jig 2024 will bend easier even in the thicker sht with very little spring back. I would add a few stringers across the width just for more support.
