Properties of Rope Materials
The values below were mostly obtained from Barry Cordage's Document # 080315E (Technical Properties of Synthetic Fibres) and were obtained from each manufacturer's data in the public domain. Like Barry, we make no representation as the exactness of the data. If you have additional or updated information, please Contact Us.
| Aramid | HMPE | LCAP | PBO | Poly- amide |
Poly- ester |
Poly- propylene |
Poly- ethylene |
|
|---|---|---|---|---|---|---|---|---|
| Names | Kevlar® Technora® Twaron® |
Dyneema® Spectra® |
Vectran® | Zylon® | Nylon® Perlon® |
Dacron® Terylene® Trevira® |
Poly- propylene,- "Poly" |
Poly- ethylene |
| Tens. Strength (kg/mm2) |
360 | 265 | 310 *Est | 330 *Est | 100 | 115 | 60 *Est | 40 *Est |
| Elongation at Break |
3.4% | 3.8% | 3.3% | 2.8% | 18 - 24% | 10 - 17% | 13 - 17% | 20 - 24% |
| Tenacity kg/mm2 |
250 - 400 | 360 | 230 | 400 | 90 - 95 | 110 | 50 - 75 | ? ? ? |
| Spec. Gravity g/cm3 |
1.44 | 0.97 | 1.40 | 1.52 | 1.14 | 1.40 | 0.91 | 0.93 |
| Melting Point oC |
Carb* | 140 - 150 | 280 - 330 | Carb* | 215 - 260 | 225 - 240 | 165 - 175 | 135 |
| Modulus GPa |
140 | 105 | 100 | 180 | 3.5 | 15 | 5 | 5 *Est |
| Creep Under Load |
Hardly Meas- urable |
At High Loads |
Immeas- urable |
Immeas- urable |
Slight Under Load |
Hardly Meas- urable |
At High Loads |
At High Loads |
| Ultra Violet Resistance |
Limited | Excellent | Limited | Limited | Good | Excellent | Fair | Fair |
| Resid. Knot Strength |
30% | 50% | 50% | 50% | 50% | 50% | 50% | 50% |
|
*Est = Estimate derived from comparable values - especially for Polyethylene. *Carb = Carbonizes before melting |
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