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  1. #1
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    copper-beryllium?

    Is it true people are making frames outta this stuff? the other day someone said there is a builder somewhere making frames with it

    is there any truth to this?

  2. #2
    How much does it weigh? prendrefeu's Avatar
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    It is very expensive of a material to make. If you're ponying up for a $30,000 frame...ummm...why not get a fleet of Ti bikes instead? Oh yeah, handling beryllium will kill you.
    Weight weenies keep it light.

    Director of the Midnight Express Ride; Board of Directors, Los Angeles County Bicycle Coalition.

  3. #3
    Senior Member Ziemas's Avatar
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    IIRC in the early 1990s there were a few beryllium frames coming out of Russia. As noted above, beryllium is extremely toxic and difficult to work with.

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    I know its super harmful... thats why i was so shocked to hear it, to be honest its not that great

  5. #5
    Administrator Allen's Avatar
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    Quote Originally Posted by prendrefeu View Post
    ...Oh yeah, handling beryllium will kill you.

    that's what I was thinking. In the Navy we had to take all these precautions when we had to repair gear that had beryllium alloys in it.

  7. #7
    Uber Goober StephenH's Avatar
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    "the price for an ounce of Be is about $300!! This translates into $19, 200 for one pound of material!!"

    Uh, no, that translates into $4,800 for one pound of material.

    Beryllium-copper is a heat-treatable alloy used for non-sparking tools and stuff, but would not be especially useful in a bicycle frame; it is mostly copper and is not light. The article referenced is referring to beryllium or a mainly-beryllium alloy.
    "be careful this rando stuff is addictive and dan's the 'pusher'."

  8. #8
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    They make golf clubs out of it and hammers. Not all that expensive in the Be Cu stuff. I once reground a club before I knew it was a bad thing to do.

  9. #9
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    bikes are made out of beryllium, not the copper type, they usually take sheet metal and form it into a tube and weld it, then fabricate a frame, beryllium is very high on the element chart showing its weight.

  10. #10
    Senior Member DannoXYZ's Avatar
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    Copper-beryllium is like 1.6% beryllium. What it does is gives you a very tough, dense and heavy metal. Good for hammers & golf-clubs, but not exactly great strength-to-weight ratio for bike-tubing.

    Beryllium-copper = 0.298 lb/in³, 32-170kpsi yield-strength, 70-117kpsi ultimate-strength
    Lescalloy - high-strength alloy-steel = 0.281 lb/in³, 185kpsi yield-strength, 220kpsi yield-strength
    Last edited by DannoXYZ; 08-26-08 at 08:17 PM.

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