Dyneema rope VS steel rope – strength test – break test


12 strand Dyneema is a type rope
that’s manufactured with Dyneema fiber It is an excellent alternative to steel
cable and has many positive caracteristics extremely high strength lightweight abrasion resistant low stretch floats on water splice able wear-resistant and flexible The following demonstration will compare the strength and break characteristic of 12 strand Dyneema rope with that of conventional steel rope for the first part of the test, we will be using
standard 3/8″ steel winch cable the steel cable withstands a load of 14,478 lbs in the event of a partial rupture, steel
ropes higher mass and recoil present a clear danger for any operator Now let’s take a look at the performance of 12 strand Dyneema rope the Dyneema rope breaks in a clean and
predictable fashion and withstands a significantly higher
18,857 lbs the low-mass and recoil of 12 strand Dyneema rope can significantly reduce the workplace hazards for your operation in the case of a partial rupture, as
demonstrated here the benefit of 12 strand Dyneema’s lower mass is evident as the vast majority of the energy
released during the break is dissipated along the length of the rope in a linear fashion with relatively low recoil For more information about 12 strand Dyneema rope and other fine rope products visit www.AtlanticBraids.com

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Comments

  1. Interesting. I wouldn't have thought that rope could be stronger than steel cable.
    Dyneema seems to be high density polyethylene and is also used in Ballistic vests.
    Low density polyethylene is used in garbage bags.

    Great video.

  2. are you going to do a comparison between dyneema and vectran?

    (I'm a sailmaker, so the test between the two could prove to be quite interesting)

  3. Interesting comparison, but if you want to compare both materials, you need to compare all the details.
    First, you need to compare samples with the same type of terminal or terminal with the same efficiency.
    Second, what kind of tensile grade wire used in steel cable?

  4. Regarding a comparison with Vectran [LCP] (Kuraray fiber) you need to take into account that some features are comparable (breaking load, etc), but other features are specific to each material (the type of cut resistance and abrasion, density, Creep, etc.)

  5. The wire was tested using wire clamps and the Dyneema rope was spliced.
    I would like to see the same test with metal wire spliced, clamps and knots can affect a lot the strength of the line.

  6. @diffynou You are correct in some of the things that you have mentioned, but, under australian standards, w/rope grips and definately knots, can never be given a w.l.l. or an accurate breaking strain. Normally, the wire should be hydraulically swaged, therefore giving it a w.l.l and a 5:1 breaking strain.
    Dyneema braided rope is an excellent product, as long as it is hand spliced correctly.

  7. It does look like the steel breaks initially at the clamp. However, the test still seems relevant to real-world use…one of the benefits of Dyneema is that it is easy to splice, whereas steel is not so it is likely to get clamped. .

    Dyneema is awesome stuff!!

  8. @diffynou Need to use the strongest available method for the individual material. Steel rope only attains 90% strength with splices. Termination efficiencies vary from about 70% for a Flemish eye alone; to nearly 90% for a Flemish eye and splice; to 100% for potted ends and swagings. You can't use a potted end and swaging on braided Dyneema. Splicing steel rope and terminating with potted end is a specialist job. These experts are only available in very limited circumstances.

  9. @droceretik Better to compare strengths using the usual methods of termination, that is clamps and thimble or ferrule and thimble for steel and loop splice and sleeve fot Dyneema braid. However if you just want to compare the strength of the wire agains the fibre then a potted end and swaging is the go. Even though it is not used in ordinary marine and lifting .equipment. Usual the steel rope chosen is more than double the required strength for safety so a 10 % drop in strength is irrelevent.

  10. It looks to me like the Wire rope grips (bull-dogs) were attached to the steel wire rope the wrong way around, the elbow should go onto the non-working tail of the cable with the saddle sitting on the working part of the cable. If it's put on the wrong way around (and it certainly appeared the way in the video) then it significantly weakens the steel wire rope – hence the expression "never saddle a dead horse".

  11. Those clamps are installed correctly. The saddle is not the 'u' bolt. If you were to saddle the dead end as you state then you would be compressing the working side of the rope while the real saddle would be distributing the load over the dead end.

  12. Dyneema rope snapped were the splice was which is a weaker point, so a straight line of rope probably would have taken more strain.

  13. If I were using it as a vehicle recovery rigging setup, i would not choose this product lance, as an Ironworker by trade I use almost every piece of rigging hardware you can think of, I have seen first hand the explosive characteristics of synthetic slings failing. On the flip side a wire rope sling simply breaks and drops to the ground. There were even reports that one incident where a man was being pulled out of the mud at an oil sands site, the synthetic web sling let go and came through the

  14. I only produced the video for Atlantic Braids, I would contact them if you require more details and specs about their products.

  15. Dont accept cheap imitations. Dynema, although a fine product, is a brand name for a wannabe better synthetic rope. That rope is called, AMSTEEL BLUE, even though it may not necesarily be blue. AB along with the attributes mentioned,it doesnt conduct heat or electricity, and not only reduces hazard from recoil but eliminates it. I had a shackle part on a full out pull and everything fell directly to the ground.No steel splinters. Pulls off the drum easily. Drags through snow effortlessly.

  16. Thanks.
    When I started using amsteel I recall the 3/8 having a BS of 19000 and something. Then I recently saw a 3/8 dyneema rope for winching by smittybilt with BS of 17 000 odd and assumed it was a different and inferior product.I studied up on the American Rigging and Samson sites. I believe that these fibres are the best physical invention made by man in the last decade or two. I am puzzled as to why steel is still used at all. Some folk have not even heard of this stuff. Why is that mate?

  17. Another thing. When I need a loop in the end I just use a simple bowline.( for winching in off road apps). It works fine and is easily undone. But if I was gonna put my life on the end of it I would insist on a little more than that.

  18. only visually because the dyneema is recoiling along its length at a much slower speed than steel breaking. u could probably get whipped by the recoil of the dyneema and just have a bruise, but if the steel hits u, ur going to lose an appendage or have deep lacerations…

  19. if your rope is getting that hot, the temperature is also going to be high enough to seriously lower the tensile ultimate yield strength of a steel cable too.

  20. Just be aware that any knots which can move around have the chance of weakening Dyneema by over 50% because of its low melting point. Be very careful with anything causing friction on it, especially in terms of other fabrics (including itself, as in the case of a cinching knot).

  21. I'd still choose steel. The test showed that the steel was able to keep a positive stress load on the testing machine, whereas when the Dyneema snapped it was a clean break. Accidents happen, and ropes fail. I'd prefer a rope that doesn't snap instantly, one that gives you a warning (if only split second) that it is about to give way.

  22. Also there are some comments vis a vi chafing and sun degradation, not to mention the different splice arrangements.
    Lets have a better analysis instead of a caveman-like 'my rope lift more' mentality. Can we look at repeated load tests (ie how many times can you put say 14000 pound on the steel or dyneema before failure, partial or complete?) I think it takes more than just a simple test, and as yet unverified claims about your product. Its like saying a hotrod has the most horsepower, but everyone knows its torque at the wheels and grip on the tyre that matters. A key aspect of a good rope is that it does not act like a chain (ie 1 weak link = failure)
    You haven't sold me or any aussie tradesman worth his salt. But keep working on it, I am sure you can make something worth buying…

  23. Sure, dyneema rope holds up to TENSION, but I won't be impressed until someone can offer me a rope that holds up to compression.

  24. Perhaps an answer to rusting cable in suspension bridges. A problem throughout the world.  You can hear the strands pinging as they give way.

  25. It's not necessarily safer, you have a rope with 18000lbs flying back on whatever it's connected to causing major damage, say winching a truck out it breaks, that would cause a major dent, still a good video and looks like a good product

  26. I bought 2 winch ropes from this store:
    http://stores.ebay.com/v-impression/_i.html?_nkw=winch+rope&submit=Search&_sid=1109847033
    Satisfied!

  27. Dyneema rope is far superior and much easier to handle but why do a test on a cable that uses cable (crosby) clamps? Right on any package for the clamps it says it reduces load to 80%, it is a better product no need to try to stack the deck in the test

  28. Could you make cable snaps less dangerous by adding a few strands of something soft to adsorb energy in the event of a failure? (e.g. mild steel for steel cables, some other plastic for dyneema.)

  29. I use dyneema every day at work. Saved my ass so many times. It's an incredible product and so much lighter. Totally worth the investment.

  30. i need a rope that can stand a 25 ton spining object at 10rpm . the rope lengd needs to be 250 meters long. are any rope in the world that can do that?

  31. This happened a couple years back – www.liveleak.com/view?comments=1&i=501_1341320271

    Not exactly a broken cable though.. still..

  32. A great product but I'm very concerned about your claim for long lasting.
    There's a reason for steel ropes versus certain fibres and that's how easily a sharp edge could cut it.

  33. We use dyneema. If your careful and follow the rules its a good choice. I like the fact it floats and has no real memory effect. Its light too. Wire is more abuse friendly in some respects.

  34. But it makes no since my dad has been using steel cable for many years and it never failed him like that while me on the other hand have been using 3 strand polypropylene rope and it has never failed me it was so strong that my uncle tie it to a strap that he was wearing one time and jumped off a tree with a trampoline at the bottom but then I freaked out because the rope didn't break it only stretched a little so my uncle had to unbuckle his strap to land on the trampoline to get down what freaked me out was that my uncle was weighing nearly 300 pounds at the time so I thought the rope was going to break but it didn't even come close to breaking.

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