Cbm is a generic recycling term with two standard meanings Copper breakage material Copper baring material (Occasionally m can signal motor but that has fallen out of use generally within the industry).
What constitutes cbm as mls said, varies by yard. Very large and small specialty companies may have 4 or more levels (eg #1, 2, 3, brk). Others toss anything with copper at less than 50% weight into a single cbm class.
Motors are generally classed out by type and design at any yard that handles more than a ton per week. Sealed vs loose. Steel from aluminium and brass etc. These yards will pay different rates for, say, a drill motor vs a fan vs a cd/dvd motor. Further breaking down motors a cd/dvd tray motor would be a sealed motor but the spindle motor which is a loose motor. The engine from an electric car would be an aluminium motor.
Also while sealed (in plastic or steel) transformers may go as a low grade cbm or as a transformer, an open transformer would usually go as a loose steel motor. If you follow my train of thought here. Anyway: your post based on two of the yards I use. A) loose motor B) cbm#1 C) cbm#2 D) cbm#1 E) cbm#3
Also my primary steel yard has one single rate for any and all fans. Be it a cpu fan, a power supply fan, or a giant box fan or ceiling fan. Regardless of if they’re in a nice copper mould or a heavy steel one. so ask yours how they handle them. Only time I do anything to fans beyond sniping the wires is when they’re in a copper heatsink. Only time I break those coils like you posted is when they’re from a commercial appliance like a dryer, where I’m getting lbs of #2 or #3 copper. (You’ll rarely find #1 in computers.
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