I just got this aftermarket exhaust on my truck and it's recommended that it be welded, but the metal is aluminized steel. How do I mig weld aluminized steel?
This Site Might Help You. RE: How to weld aluminized steel? I just got this aftermarket exhaust on my truck and it's recommended that it be welded, but the metal is aluminized steel. How do I mig weld aluminized steel?
Yes. Buy a bimetallic strip where one edge is aluminum and the other is steel. A bimetallic strip is a special metal strip where an aluminum strip is fused to a steel strip by high frequency welding. You can form the strip to the shape of the table legs' cross section then weld the steel edge to the leg and the aluminum edge to the table top. Ensure however that the aluminum table top is a weldable alloy and compatible with the bimetallic strip.( You can not weld Al. Alloy 6061T6 so look for Al.Alloy 5086H32 or 5456H321 or the lower Al. Alloy designations, but they have to be strain hardened and not thermally hardened).
aluminized steel is just std steel with a coating applied to it to keep it from rusting. It welds just like std mild steel. You need to prep the joint and thats it. Use a wire wheel, brush, sandpaper or what ever to clean the joint of the pipes where you will weld. You don't have to get too crazy here. Just a quick brush/wipe with sand paper over the joint and your ready to weld. For mig welding, I would use a 75/25 gas mix, .023 or .030 solid steel wire, around 50-70 amp setting (on most migs this will be #2 heat setting) and around 3/10th to 4/10th wire speed. (some welders will list 0-10, others 0-100, so figure your scale, like 0-10 it would be 3-4, one that list it by 10's then it would be 30-40)
