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Nonferrous topics such as copper and aluminum, annealing, etc. go here.

TOPIC: Annealing Copper

Annealing Copper 3 years 9 months ago #1239

What is the annealing temperature range for copper CDA110? How can I tell whether it is over-annealed or not?

I annealed copper wire at 1600oF and found some bumps on the surface. What could have caused this defect?
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Re: Annealing Copper 3 years 9 months ago #1240

Hello wsc,

CDA #110 is 99.9% pure electrolytic tough pitch copper and the annealing temperature range is 600 to 1400 F. Keep in mind however that annealing is a time-temperature relationship. The degree of anneal is determined with a laboratory tension tester.

"Some bumps on the surface" is really not enough information to give us a clue as to what is going on. For instance we don't understand if this is over a whole spool of wire or perhaps just at one spot such as the end of the spool. We therefore suggest you read the following thread

Looking at your company's website, we also suggest you discuss this further with a staff metallurgist or metallurgical engineer.

Peter J. Stewart-Hay
Stewart-Hay Associates
519 641- 3212
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