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| Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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cleaning brass or alum with vinegar
On Thursday, January 30, 2014 1:32:36 PM UTC-5, Bob Engelhardt wrote:
"Brass"? I thought cores were either aluminum or copper. Brass is a much poorer conductor of electricity, so I'd expect the same with heat. Yes/no? Well brass has about 1/4 the conductivity of copper (at 300K) but it's still pretty good. (about the same ratio as in the electrical conductivity) I expect the weak link in the thermal conductivity chain is the metal to air interface. George H. Bob |
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