Thanks for all your help. It sounds like the designations are very material specific, which i suppose makes sense because different treatments have totally different effects on different materials.
Ok, but at least I don't feel like an idiot anymore for not knowing exactly what 1/2 and 1/4...
So the word "temper" can indicate either a heat treatment or cold-work? That is wacky.
So does a "quarter-hard" or "half-hard" copper material refer to the amount of cold-work during rolling, or does it refer to the degree of annealing after rolling?
I have studied metals extensively in the...
So soft strip is rolled to either a 1/4 or 1/2 reduction, thus cold-working the material? Hmm, I'm under the impression that the material underwent a temper after being rolled. I suppose I should just call the manufacturer... however it's not my project, yet.
We have some copper strip material that has been specified as "1/4 hard", but some people here think that it in fact is "1/2 hard", and thus we need a longer anneal time.
I'm not familiar with the designations '1/4 hard' and '1/2 hard'. Can someone explain to me what these mean?
Thanks!
I want to measure the pressure inside of a small thin-walled cylindrical pressure vessel with strain gauges. It's a battery can, and during safety tests it heats up, so I want to lay out my Wheatstone bridge circuit such that thermal effects can be canceled. The only way I can think of doing...
