Posted by admin on Tuesday, January 12, 2010 · Leave a Comment
Aluminum is probably your ONLY other choice...but it's not actually that easy to weld. Compared to steel, it's not very cheap, either. Especially since you'll either need to use an expensive alloy to come close to equaling the strength of steel, or use tubing that is super thick (aka heavier & pricier).
If you had to ask a question like this one, that leads me to believe that you are not an aluminum welder by trade?
For something like a go cart, especially if you're making a fast one, you should make certain you know your alloys, fillers, and equipment. Not to mention if you get a heat treated alloy...you might need to worry about cracking, and possibly stress relief after you weld it.
Steel is much easier, and much cheaper. Chromoly tubing can be thinner, lighter, and very strong. For the sake of your safety, just be sure to do all of your home work on these metals. Or, be really cheap, and really easy, and just use mild steel tubing, which is actually tougher, and usually bends before it breaks.
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