copper question
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Post Fiend
Joined: Oct 2006
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From: Where's my map???
copper question
I was talking to someone on another forum. He was talking about copper brake lines. Would anyone here consider using copper for there brake lines. And why or why not.
"Mifflin Clay"
Joined: Jul 2005
Posts: 3,177
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From: Mifflin, PA
To the best of my knowledge it's a real NO NO. I doubt the copper would hold the pressure demanded in a full scale panic stop. And the corrosion factor in salt environments has to be considered. Absolute best would be stainless. Most vehicles have plain steel lines, and I have seen these develop corrosion to the point that pinhole leaks occur. JMHO, as usual.
"Mifflin Clay"
Joined: Jul 2005
Posts: 3,177
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From: Mifflin, PA
Actually the copper used in refrigeration service would probably resist stress hardening pretty well. and is usually seamless. That said, max pressures in refrigeration seldom exceed 300-350 PSI, way below that which would be encountered in a hydraulic brake system. The Home Depot/Lowes stuff may very well be of seamed construction, and will very likely be subject to metal fatigue. You might loose some groceries if a refrigeration line failed, you might loose your life if it failed in a brake system.
Posting Guru
Joined: Sep 2003
Posts: 1,192
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From: lino lakes, mn
copper will not hold the double flair (it will split) and will not hold brake pressure! never use copper for brakes!
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Post Fiend
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From: Where's my map???
So far that is exactly what i have been telling him. He claims someone actually makes copper brake lines. Anyone hear of this?
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"Mifflin Clay"
Joined: Jul 2005
Posts: 3,177
Likes: 4
From: Mifflin, PA
Yes, BUT, they are a copper PLATED steel line. Supposed to resist corrosion, but more of a marketing gimmick. I think some steel lines (the grey colored ones) are also plated to resist corrosion.