>
An alloy adds strength, but it can
also stretch how much the manufacturer can get from a given amount of
copper.
You just add other cheaper metals.
That's where the cheapness comes in. That's where the quality control
comes in. If you buy off-brand crap on ebay or wherever, then you don't know
what you're getting. A name brand has a reputation to protect. So they will run
QC checks on the stuff coming off the boat. If it turns out to be not up to
standard, then it will be refused and returned. Or the supplier will be
terminated.
Ron
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