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Any feel for which of the hi-mod fibres are tougher than the others,
Vectran vs. Kevlar, Technora vs. Dyneema ?*kN*
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There are several things to keep in mind. Dyneema, a derivative of polyethylene, has an extremely low melting temp, 297*. A poor choice for friction hitch applications. It has a very low conductivity, a great choice for working around energized lines.
My personal experiences:
I use technora for friction hitch eye & eyes and have been for a number of years, exactly I don't know, but at least 8. It will take tight bend radius turns much better than kevlar. It is very resistant to heat and petroleum products.
I use dyneema for spider leg slings for crane work and rigging when working around energized lines. Once put to use, it gets a 'fuzzed up'. The fuzz helps protect the inner fibers from wear. I have two 1/2" spider leg slings that have way more than 100 crane picks on them and they are still in excellent shape.
Vectran is relatively new to our industry. I have tried eye & eyes with it, but found it too slippery. For the money, technora is only a few cents more (less than 1%) and has higher heat resistance.
Melting temps: Technora 900*, Vectran 625*
I would like to see more Vectran data from our industry before I use it in rigging apps.
Dyneema and Technora are the fibers I use. Each have there limitations and advantages.