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  1. #1
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    Is T-300 stronger than T-1000?

    Hey guys,

    I was looking at Toray's website and I noticed that T-300 carbon fiber is rated at a much higher (1860 Mpa vs 1570) flexural strength than T-1000 fiber for a 60% fiber volume matrix, even though T-1000 carbon fibers are obviously much stronger than T-300 in pure tensile strength (6370 Mpa vs 3530)

    http://www.toraycfa.com/pdfs/T1000GDataSheet.pdf

    http://www.toraycfa.com/pdfs/T300DataSheet.pdf

    Does anyone know why this is? Does this have to do with T-1000 fibers being thinner and more likely to experience micro-buckling or something? Would T-1000 be stronger than T-300 if it was compared in a 70% fiber matrix like what most bike frames are made of?

    Btw, I think HexCel actually makes the strongest carbon fiber according to their website, both in composite form (flexural strength) and in pure tension.

    http://www.hexcel.com/Resources/Data...heets/AS4C.pdf

    http://www.hexcel.com/Resources/Data...heets/IM10.pdf

    In real-world applications, I think flexural strength, or a combination of tensile and compressive strength, would be more important than pure tensile strength.

  2. #2
    Nemophilist
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    Hey;

    I cannot really speak to much of what you are asking, except the last part, perhaps. I do not think you will find a single tube in a bike frame that sees anything but a complex, multi-directional load. It would seem to me that the tubes would need to reflect that in their design to a large extent. At the same time, there is obviously a lot of potential to tune the ride by selecting weaves of a particular nature for a certain position in the frame. In fact, it might be far more complicated - but beneficial - to do that with carbon than with any other material.

    For now, steel is plenty complicated for me.
    Most people ply the Well Trodden Path. A few seek a different way, and leave a Trail behind.
    - John Hajny, a.k.a. TrailMaker

  3. #3
    will rant for food
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  4. #4
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    That doesn't talk about how carbon fiber behaves under compression.

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