What is the difference between LT and T directions in MMPDS (formerly MIL-Handbook 5)?
I hand understood that forming metal orients its grains, destroying the isotropic nature of 'pure metal' and that the "Long" direction is the length of the sheet/extrusion/etc, and that there were two transverse directions. There is the "Short Traverse" which would be the thickness (or "depth") of the sheet/extrusion/etc. There is also the "Long Traverse" direction which would be the width of the sheet/extrusion/etc.
But then MMPDS throws in a "T". Is this just for the times when you cannot distinguish between LT and ST (such as in a rod)? I also see datasets where specimen orientations are T and ST, which furthers my confusion. MMPDS itself doesn't seem to offer much further guidance.