Welding Tips and Tricks

Anyone had any experience welding J524 low carbon steel tubing? I'm assuming it CAN be welded. Can I use ER70S-6? My use is not structural at all. I'm fabricating lighting diffusion frames from 3/8" OD, 0.028" wall J524 tubing. Total weight = less than 5lbs. I was trying to get mild steel in this dimension but the only thing my supplier can source is J524. Sounds good... Any input?

I’d be careful welding it since it’s annealed already. Perhaps opt to braze it instead? Or use Silicon Bronze wire? I’ve never used the stuff before, but my recollection is that tubing is best suited for hydraulic lines which tends to put me off welding it. I could very well be wrong about its suitability for welding though.

(Actually as I was typing this, I did a quick Google search and found this: https://fabtacc.com/products/3-4-o-d-x- ... ing-plated). Note the advice not to weld or braze it! You might choose a different tubing in slightly different dimensions.

If you are struggling to find material, look here: https://www.onlinemetals.com/en/buy/rou ... 0.028%2522

Everything listed in those dimensions is either stainless or Chrome Moly, both of which can be welded. Or adjust your dimensions perhaps?

I'm going to leave it alone and go with stainless. It's just too risky. 4130 would be nice but it's a little pricey. Thanks cj737.