What should the appearance of cold rolled 1020 ERW square tube used in chassis fabrication be, bare metal silver/gray? The reason I am asking is all book sources say to use this type ( for main frame rails and such, and DOM/seamless round for roll cage,etc.), but they don't show what it looks like. Ordering some 1020 cold rolled I got stuff that was darker blue/gray in color, and after doing more reading, I wondered if this was annealed tube, a few sources said not to use annealed 1020 in chassis fabrication because ultimate/yield of annealed is less than half that of non annealed.
When you buy 1020 ERW tube, looks like you need to be very specific when ordering, I am just wanting a way to be sure what the stuff is.
When you buy 1020 ERW tube, looks like you need to be very specific when ordering, I am just wanting a way to be sure what the stuff is.