I've just build [brazed amd MIG] a recumbent bike from old scrap frames etc. It's my first attempt at any kind of brazing/welding. So far everything is holding up fine.
I'm planning another one which will also use the tubing from old frames as well as incorporating some brand new tubing. My local 'big' hardware store has quite a good selection of metal tubing, but both the round and the square tubing that I want to use[about 14mm x 1mm or
16mm x 1mm] comes under the heading of 'cold rolled iron'. My knowledge of metal is pretty limited, but am I correct in thinking that this is going to be weaker/softer than ordinary mild steel, and so I should therefore refrain from using it? Or is 'cold rolled iron' another name for mild steel?I know only that steel, in all it's various varieties, is derived from iron and various types are used in bike frame construction, and I also know that strength is as much the result of design and geometry. Weight is not an issue, I just want to make sure this stuff is going to be ok.
Any input appreciated. Thanks Garry