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Cable Asylum Interconnects, speaker wire, power cords. Ask the Cable Guys. |
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In Reply to: Mr. Strassner's comments on conductor issues, like oxygen in copper. posted by Tekunda on March 12, 2002 at 07:18:24:
Hi,All copper or silver (wire) includes traces of other metals, invariably. For common OFHC (Oxygen Free High Conductivity) Copper the maximum amount of traces of anything else but copper is 300ppm. Now basically ALL copper used for wire is OFHC and is calculated to meet it's spec even after prolonged exposure to surface oxidisation.
The traces of anything else but copper may (will) be all sorts, even silver and gold in cases (hence arguments that copper or silver made from ore mined in certain mines sounds better), but common will be nickel and iron.
However, this does not as such deal with claims of 99.999999% purity for copper. I doubt that Metal can be reliably certified for an oxygen content of less or equal than 0.000001% (that is 0.01ppm) never mind absolute purity on that level.
I hesitate calling such advertised claims outright lies, I shall regard them as creative marketing science.
Ciao T
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Follow Ups
- My point pretty much - Thorsten 03/13/0209:08:58 03/13/02 (0)
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