The process of soldering and brazing these pieces together was actually quite challenging and took a fair bit of time and effort on my part. Due to the ductility of the metal that was used for these tests most of the tensile strength recordings are somewhat inaccurate or were unreadable due to the test equipment not being able to compensate for the amount of give in the middle and not recording the brake.
The first best friends that we tested where the Baseline this was to give us an accurate reading of what base material would do in the tensile test machine with no soldering or brazing. The copper Baseline gave us an elongation of 17.2% with a thrown off KSI reading due to the way it broke but there was a yield Point listed around 32,640.00 psi. The brass Baseline elongation listed 7.7% with an upper yield point of 45870 PSI the first tensile strength test that I did against the modified samples was the copper that was put together with the plumbing silver solder. These results were inconclusive due to the fact of the sample was not able to be tensile strength tested. Later experimentation showed that this solder was not suitable for any kind of torsion put on to the specimens which would lead to immediate failure of the joining material. This was the same result for the brass as well. The next test conducted was the silver solder given to me by the school. For the copper recorded elongation failed due to the way the piece broke but an overall KSI strength of 32.5 KSI. For the brass once again we had a failure but this time we failed to record the tensile strength but we did record a overall elongation of 10%. The next specimens were tested were the brazing. Due to the way the copper specimen broke there was no tensile strength recorded as well but there was an elongation recorded of 10%. For the brass we registered a 3.3% elongation and a 37.2 KSI. My overall take away from this experiment is that I learned finite details about A. the utilization of exotic metals B. materials proper for joining said exotic metals C. where it is feasible to use certain types of conjoining methods whether it be soldering, high temp soldering and lastly brazing
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- Spring '19
- Tensile strength, Solder