In this 12-strand round-plait construction, high-strength Ultra Blue fiber creates a rope that is 30-35% higher in strength than the equivalent polypropylene construction, giving RP-12 Ultra Blue up to three times more wear life than polypropylene.
| Diam. (inch) | Circ. (inch) | Weight per 100 ft. (lbs) | Avg. Strength (lbs) | Min. Strength (lbs) | Diam. (mm) | Circ. (mm) | Weight per 100 M (kg) | Avg. Strength (kg) | Min. Strength (kg) | ISO 2307 Strength (metric tons) |
|---|---|---|---|---|---|---|---|---|---|---|
| 5/8 | 2 | 9.5 | 9,500 | 8,600 | 16 | 48 | 14.1 | 4,300 | 3,900 | 4.3 |
| 3/4 | 2 1/4 | 12.5 | 12,700 | 11,400 | 18 | 54 | 18.6 | 5,800 | 5,200 | 5.8 |
| 7/8 | 2 3/4 | 17 | 20,000 | 18,000 | 22 | 66 | 25.3 | 9,100 | 8,200 | 9.1 |
| 1 | 3 | 23.3 | 25,000 | 22,500 | 24 | 72 | 34.7 | 11,300 | 10,200 | 11.3 |
| 1 1/8 | 3 1/2 | 25.5 | 27,000 | 24,300 | 28 | 84 | 37.9 | 12,200 | 11,000 | 12.2 |
| 1 1/4 | 3 3/4 | 35 | 38,000 | 34,200 | 30 | 90 | 52.1 | 17,200 | 15,500 | 17.2 |
| 1 5/16 | 4 | 38 | 43,000 | 38,700 | 32 | 96 | 56.5 | 19,500 | 17,600 | 19.5 |
| 1 1/2 | 4 1/2 | 44 | 47,000 | 42,300 | 36 | 108 | 65.5 | 21,300 | 19,200 | 21.3 |
| 1 5/8 | 5 | 54 | 61,000 | 54,900 | 40 | 120 | 80.4 | 27,700 | 24,900 | 27.7 |
| 1 3/4 | 5 1/2 | 67 | 70,000 | 63,000 | 44 | 132 | 99.7 | 31,800 | 28,600 | 31.8 |
| 2 | 6 | 74 | 85,000 | 76,500 | 48 | 144 | 110 | 38,600 | 34,700 | 38.6 |
| 2 1/8 | 6 1/2 | 87 | 95,000 | 85,500 | 52 | 156 | 129 | 43,100 | 38,800 | 43.1 |
| 2 1/4 | 7 | 101 | 110,000 | 99,000 | 56 | 168 | 150 | 49,900 | 44,900 | 49.9 |
| 2 1/2 | 7 1/2 | 117 | 130,000 | 117,000 | 60 | 180 | 174 | 59,000 | 53,100 | 59 |
| 2 5/8 | 8 | 133 | 145,000 | 131,000 | 64 | 192 | 198 | 65,800 | 59,200 | 65.8 |
| 2 3/4 | 8 1/2 | 148 | 157,000 | 141,000 | 68 | 204 | 220 | 71,200 | 64,100 | 71.2 |
| 3 | 9 | 180 | 180,000 | 162,000 | 72 | 216 | 268 | 81,600 | 73,500 | 81.6 |
| 3 1/4 | 10 | 215 | 227,000 | 204,000 | 80 | 240 | 320 | 103,000 | 92,700 | 103 |
| 3 5/8 | 11 | 250 | 265,000 | 239,000 | 88 | 264 | 372 | 120,000 | 108,000 | 120 |
| 4 | 12 | 297 | 315,000 | 284,000 | 96 | 288 | 442 | 143,000 | 129,000 | 143 |
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