franky
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| posted on 3/4/10 at 09:48 AM |
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copper or knufler?
As above, whats the difference between the two? Sorry if it seems like a simple question
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matt_claydon
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| posted on 3/4/10 at 09:52 AM |
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Do you mean Kunifer? It's a copper/nickel alloy, stronger than pure copper I believe. Google 'kunifer' and you'll get lots of
discussion.
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eddie99
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| posted on 3/4/10 at 09:53 AM |
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Kunifer is harder to get straight and bend but personal preference is kunifer!
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drury318
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| posted on 3/4/10 at 09:55 AM |
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Kunifer is better I think, I have seen copper used before because it is softer & easier to bend etc. I have also seen it deform to the point of
closing the end off when overtightened! Dennis
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minitici
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| posted on 3/4/10 at 10:04 AM |
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Copper is prone to work hardening and cracking with vibration.
Kunifer is recommended for brake lines.
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snakebelly
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| posted on 3/4/10 at 10:11 AM |
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kunifer is also far more corrosion resistant, basically its a copper knickel alloy, we used to use tons of the stuff (or a variant of) in sea water
heat exchangers in the middle east so if its good enough for sea water it should stand up to a battering underneath your car.
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franky
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| posted on 3/4/10 at 10:40 AM |
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Cheers gents, sorry for the spellnting mistake
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britishtrident
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| posted on 3/4/10 at 11:41 AM |
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kunifer is very easy to work with, some of the "Kunifer" sold might be cu-ni-fe allloy but it isn't the genuine stuff.
Genuine Kunifer has" Kunfier" printed continuously along the outside of pipe.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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sdh2903
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| posted on 3/4/10 at 12:46 PM |
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The kunifer i've used was actually easier to manipulate than the ordinary copper stuff i used for templates, It resisted flattening at the bends
much better.
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Peteff
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| posted on 3/4/10 at 12:49 PM |
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Kunifer 10 is copper, 10% nickel and iron alloyed. It's not much dearer, is easy to bend and doesn't form verdigris and go green like
copper.
[Edited on 3/4/10 by Peteff]
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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David Jenkins
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| posted on 3/4/10 at 01:31 PM |
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Kunifer - a name made up from the chemical symbols Cu, Ni & Fe - Copper (Cu), Nickel (Ni), Iron (Fe).
Today's trivial factoid...
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sdh2903
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| posted on 3/4/10 at 03:24 PM |
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You going for solid line over the flexy hoses then?
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franky
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| posted on 3/4/10 at 05:08 PM |
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Yep, can't afford to run all braided and no real point!
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