[ideola]

I'm not a mechanical engineer, so I don't know how to make heads or tails of the claims on either side. Here is one of the opposing viewpoints in the x-posted thread:

Originally Posted by Min

If a bridge fails, someone dies, and it turns out the engineer didn't do his due diligence, he can be sued for every last penny he's ever made. I don't see how it would be any different in this case, the guy is releasing a product that he figures will be good enough because cold rolled has a tensile strength of whatever, (oh guess what, when you anneal a metal the effects of cold rolling are reversed and it actually has a tensile strength of the softer steel it came from originally, woo woo material science. So this steel was cold rolled, and then annealed? doesn't have 54,000 psi tensile anymore, uhoh) Another point about the steel this guy is using is that, if its cold rolled, it has grains that flow in the direction the material was rolled, it has a far smaller tensile strength in the perpendicular direction of the grain. So if these steel pieces were not made with the grain flow in mind, they will also have a significantly smaller tensile strength (like, less than half, I can dig up some actual data if people want)