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Thread: Cunifer/Cunife Alloy

  1. #1 Cunifer/Cunife Alloy 
    Forum Freshman jjmckane's Avatar
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    I am interested in the Cunifer/Kunifer/Cunife Alloy, a Cupronickel type which is used for a variety of concerns, especially dealing with extremely corrosion resistant pipes, brake liners, and ship bottoms which come into contact with brackish or salt water, to prevent crevice and pitting concerns. It prevents micro organisms to attach themselves to the surfaces, reducing the need for periodic cleaning. Also, it is anti magnetic, which is interesting to me because it apparently can be used in the manufacture of magnetic objects. Brake lines often use Cunifer now, but that seems to be CuNi rather than the Fe type, so is not of interest.

    Cupronickel - Wikipedia, the free encyclopedia

    http://www.hamel.nl/Files/File/docum...Cunifer_GB.pdf

    http://www.alruqee.net/userfiles/fil...Ni%2090-10.pdf

    Cunifer (in Polish, but google will translate)

    Google Translate (The English Translation link)



    My interest is in the procedures to make from scrap smelting, which since this is a specialty product may be rather hard information to find out on the net. Copper for ordinary steel is an irritant that makes blistering bubbles, IIRC. What special procedures there are for the Cunifer Alloy I am not sure.

    I prefer the strongest Fe blend, which is 60% Cu 20% Ni and 20% Fe, though many alloys seem to have only 10% Fe down to 1%. There is some cheap scrap available that is about 10% Cu and mixing that with other Cu might reduce the cost, as no one else seems to want the scraps due to the blistering process with regular Nucor type steel scrap production.


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  3. #2  
    Forum Ph.D.
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    what are you babbling about


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  4. #3 Structural And Engineering Problem 
    Forum Freshman jjmckane's Avatar
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    Quote Originally Posted by fizzlooney View Post
    what are you writing about
    Just as posted -- as a structural and mechanical engineering problem. But put in other words, recycling efforts want to separate copper from iron as Cu is normally expensive to do so in the furnace.

    One option is _not_ a norm, the few users of cunifer who could use the raw mix in a batch with Cu, similar to watering down a chemical solution those chemically inclined as yourself. So I wanted to know if anyone has any commentary interest in the niche or willing to explore the same.

    (Not posted but taking the completely opposite tack, also want to be known is more about at what methods can be used to structurally separate the copper from the steel from wire strands before meeting the furnace. The options seem cheapest in bar, rolling or stamping mills, which all three IIRC are normally used to crush raw ore from rock. The disadvantage in this option is that ore is normally weak but steel is hard on the crushing implements.)
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