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Can you weld Schedule 10 aluminum to Schedule 40?
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Is it possible to weld schedule 10 aluminum to schedule 40? The schedule 40 has a wall thickness of about 1 inch and the schedule 10 is about .16 inches. We are building a rocket and the body tube is made of the lighter schedule 10, while the end caps of the oxidizer tank are schedule 40. The end caps are circular and will be inside the tube and will have to be welded all along the edges. We have never tried to use two different schedules so we aren't even sure if they will hold well.
Update: Yeah we are planning on beveling the edges on Monday. To tell you the truth, we didn't even think we were going to make the body tube out of schedule 10. We were just going to do the whole thing out of 40 because it's damn near impossible to find 20 feet of schedule 10 for a decent price! However, we did, and ordered the pipe after we already received the caps, so we're just stuck with them now. I'm not in the ox tank group...but I believe we are going to have around 675 psi working on the caps and then we're going to a safety factor of 2. We are pressure testing the tank in a pool this coming week. And yes. Every part is made from 6061.