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#59938 - 12/19/05 05:04 AM Is wire made with pure copper  
PEdoubleNIZZLE  Offline
Member
Joined: Jun 2004
Posts: 176
McKeesport, PA, USA
I have a stupid question for everyone. Is the copper in wiring made from pure copper (not accounting for negligible impurities), or is it an alloy of some sort?
-Josh


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#59939 - 12/19/05 11:00 AM Re: Is wire made with pure copper  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Not only is it essentially pure copper, it is what is known as "oxygen free" copper.


#59940 - 12/19/05 01:00 PM Re: Is wire made with pure copper  
IanR  Offline
Member
Joined: Dec 2004
Posts: 328
Palm Bay FL USA
"oxygen free" copper
They are required to use it on sattelites and on the space station. [Linked Image] [Linked Image]


#59941 - 12/19/05 02:19 PM Re: Is wire made with pure copper  
SolarPowered  Offline
Member
Joined: Jul 2004
Posts: 625
Palo Alto, CA, USA
Ya mean,... those guys selling the "oxygen-free" interconnects at $100 a foot are charging for a feature the $5 RCA cables from Radio Shack already have??? I'm shocked, I tell you! Shocked!!!


#59942 - 12/19/05 07:19 PM Re: Is wire made with pure copper  
Sandro  Offline
Member
Joined: Dec 2001
Posts: 444
Stoney Creek, ON, Canada
Ok, you got me....what benefits are their to oxygen free copper?


#59943 - 12/19/05 07:27 PM Re: Is wire made with pure copper  
LK  Offline
Member
Joined: Jan 2003
Posts: 1,429
New Jersey
With oxygen free copper, the electrons sweat less.


#59944 - 12/19/05 07:33 PM Re: Is wire made with pure copper  
jwhite  Offline
Member
Joined: Dec 2005
Posts: 64
Trenton, NC, USA


#59945 - 12/19/05 07:59 PM Re: Is wire made with pure copper  
CTwireman  Offline
Member
Joined: Feb 2002
Posts: 840
Connecticut, USA
Yes, wire is made from pure copper. Even small amounts of impurities can greatly reduce conductivity.

Peter


Peter

#59946 - 12/19/05 08:26 PM Re: Is wire made with pure copper  
wa2ise  Offline
Member
Joined: Nov 2002
Posts: 784
Oradell NJ USA
Just imagine if the only good conductor of electricity was mercury. Instead of copper wire, you'd be using rubber hoses filled with mercury. Slices would be fun.... Talk about leakage.

SOme audiofools might be convinced that mercury filled garden hoses for speaker cable gave the music a "fluid" sound....

Heard, that back in WW2, some buildings built for the Manhattan project (A bomb development) were wired with silver wire, as copper was in short supply.


#59947 - 12/19/05 08:49 PM Re: Is wire made with pure copper  
NJwirenut  Offline
Member
Joined: Sep 2001
Posts: 806
Bergen County, NJ
Quote
Heard, that back in WW2, some buildings built for the Manhattan project (A bomb development) were wired with silver wire, as copper was in short supply.


Not buildings, AFAIK, but the electromagnet windings and busbars for the calutrons at Oak Ridge, TN, used for uranium isotope separation:
http://www.childrenofthemanhattanproject.org/HISTORY/H-06b2-1.htm

They borrowed 15,000 TONS of it from the US treasury...


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