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The 90/10 copper-nickel alloy is far different from the copper tubing you buy in the hardware store.

I specified 90/10 for heat exchangers because it has excellent corrosion resistance in salty water, it's used in heat exchangers on seagoing ships. And it has been tested for use in brake lines. So just as the addition of bit of carbon makes iron into steel, so the addition of 10% nickel turns copper into something much better.

As for the regular copper tubing used for brake lines, sure, it's better than a rust-perforated steel line. But if you're going to trust your brakes to stop you from high speeds or in the mountains (unlikely in Newfoundland) then it had better be more than straight copper.

R.

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