How To Tig Weld Aluminum Tubing. While mig and tig are commonly used methods for welding aluminum, there are several other types of welding that can be used: That makes it flow better, and crack less.
There is a rule of thumb that one amp per one thousandths of thickness (up to around.125) will get you pretty close. Know the difference in direct current and alternating current for tig welding. The tube is only 1/2 (12 mm) od, and to add to the problems it's only 0.050 thick.
But 1.5 amps per thousandths along with a.
But as it heats up, you back off to much less than that. Tig welding is an advanced technique that involves the use of both hands in a slow and. Use 5356 on 6061 when the weld will be anodized after welding Some experts recommend backstepping the first inch or so of each aluminum weld before finishing in the normal direction.