I am just about ready to take the plunge and order in the materials necessary to duplicate my current airframe out of 4130. Thanks to all of you guys for the tips and sources. I have one more question. What other metals are compatable with 4130 when welding? My problem is in locating any angle in 4130. So far all I have found is seamless tubing and flat stock. My frame currently uses some angle 1"x1" angle. I would like to stay with using angle in these locations if possible. So, now this may sound dumb, but can you weld mild steel or another alloy to 4130 tubing that I can get in angle? Or better yet, do you know of a source for 4130 angle?
19 years ago