Advertise on Bikeforums.net



User Tag List

Results 1 to 10 of 10
  1. #1
    Member
    Join Date
    Jul 2008
    Posts
    34
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    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
    Join Date
    Jul 2005
    Location
    Weight Weenie on a budget.
    My Bikes
    Lotus Fixed, Bianchi Virata 2004
    Posts
    3,427
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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
    Join Date
    Nov 2004
    Location
    Riga, Latvia
    My Bikes
    Iro Rob Roy, Colnago Competition, LHT, Kona Sutra flat bar, Torelli cyclocross, Vanco Cyclocross Fixed Gear Conversion
    Posts
    9,967
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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.

  4. #4
    Member
    Join Date
    Jul 2008
    Posts
    34
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I know its super harmful... thats why i was so shocked to hear it, to be honest its not that great

  5. #5
    Super Moderator Allen's Avatar
    Join Date
    Sep 2005
    Location
    Atomic batteries to power; turbines to speed
    My Bikes
    Salsa La Raza, Panasonic Electric, Bria, Bamboo touring, Bamboo cargo
    Posts
    4,670
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by unterhausen
    I believe that in this case "solid meh" means "so 'meh' that it could never be anything more than 'meh', and yet also no less than 'meh' -- in a word, exactly 'meh'"

  6. #6
    Senior Member
    Join Date
    Mar 2007
    Location
    Central PA
    Posts
    390
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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
    Join Date
    Sep 2007
    Location
    Dallas area, Texas
    Posts
    10,304
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    "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
    Banned
    Join Date
    Aug 2005
    Posts
    5,117
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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
    Senior Member
    Join Date
    Jul 2007
    Posts
    84
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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
    Join Date
    Jul 2005
    Location
    Saratoga, CA
    Posts
    11,496
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •