(Off Topic) Aluminum wire alloy???

Discussion in 'Hangar Flying' started by Aerowerx, Aug 11, 2019.

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  1. Aug 12, 2019 #21

    Doggzilla

    Doggzilla

    Doggzilla

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    And for those wondering the steel does not provide the majority of the tensile strength. As the article states, aluminum supported by steel is a completely different class. ACSR still relies on the aluminum for most of the tensile strength.

    **But it is extremely extremely sensitive to temperature and will begin to fail above 167 degrees F due to annealing.**
     
  2. Aug 13, 2019 #22

    Aerowerx

    Aerowerx

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    Thank you!

    By the way, my earlier rant was not just concerning this thread. I have seen the same thing with other threads by other people.
     
  3. Aug 13, 2019 #23

    Doggzilla

    Doggzilla

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    Digging further in and actually doing the research, there are only 3 aluminum alloys for electrical wire and one for non electrical. None of them are 6000 or 3000 series.

    They are 1350,1370, and 8176. The 8176 being alloyed with Iron.

    The strength and stiffness is changed by the annealing process, so the very same alloy can have more than 20 kinds of hardness and strength.

    That is likely what you found, a high H rating 1350 wire that was treated for additional hardness and strength.
     
  4. Aug 13, 2019 #24

    Aerowerx

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    Thank you, Doggzilla.

    Also, just wondering. Are there any aluminum wire alloys that would be strong enough to be used for "flying wires" or "drag/compression" wires in an ultralight to save a few pounds. I know that 7075 is actually stronger than some steel alloys, so is it available in wire form? (Rhetorical question..not actually planning on this)
     
  5. Aug 13, 2019 #25

    Doggzilla

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    Unfortunately that’s probably not a good idea.

    Lots of reports of them breaking at connections if exposed to vibrations. They also have problems with becoming loose at temperatures above the installation temperature because of the extreme thermal expansion. And lastly, it has a significant amount of creep/stretch, which is why they use steel reinforced strands for most uses.

    But they do make lightweight aluminum alternators that are significantly lighter than the originals. That could save basically the same amount of weight with a lot less to worry about.
     

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