T1 T2 T3 is the grade of copper.
Simply from the purity point of view, T1 copper is certainly the purest of the three, the purity of 99.95%, T2 copper purity is about 99.90%, slightly lower than T1. T3 is relatively low, generally in the 99.70% or so. So, how to distinguish between these three grades of copper? First of all, the naked eye we can separate? Through careful observation and comparison, yes. t1 copper color is the brightest, purple-red, gloss, feel delicate, because of high purity, good texture, pure color. t2 copper is slightly darker than t1 copper color, surface smoothness almost.
T3 copper color is more inclined to dark red, touch is also more rough. In addition, from the hardness, T1 and T2 hardness is about the same, are relatively soft, you can use your fingernails to scratch, basically there will be no scratches. t3 hardness is a little higher, with the fingernail can leave traces.
If you want to accurately differentiate, it is necessary to use professional equipment! Finally, incidentally, the conductive properties, T1 is certainly the best, so T1 is mainly used to produce high-precision electrical equipment, wires and cables, electronic components, etc., T3 conductivity is the worst, but the strength is higher, so T3 can also be used as ordinary hardware tools, rivets, nuts and other mechanical parts. T2 is in the middle, used to make conductive rows, radiators, pipelines are more.
