John,
Several materials have been / are being used for brake piping.
First & worst is regular copper. Copper work hardens with vibration &
flexing & fatigue cracks. Not good for brake or fuel lines.
Low carbon annealed steel has been used for many years. It is not
subject to fatigue failure but has rust & corrosion problems.
Various coatings have been used to protect the steel, such as, copper &
tin plating. A typical brand is "Bundy"
A 90% copper - 10% nickel alloy (UNS C70600) has been used in Europe for
many years. It has the fatigue resistant qualities of steel & very high
corrosion resistance. I don't know whether present US car manufacturers
& racing organizations are sanctioning It's use or not.
The confusion may be between copper, copper plated steel, & 90/10 copper
- nickel. The all appear to be somewhat copper color & all contain copper.
Dave Russell
BN2
John Miller wrote:
> You're not using copper for brakes lines, are you? They *will* fail, which
>of
> course will always happen at the worst possible time.
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