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AlfaThree® / AlfaFour®

3 or 4-strand twisted sinking composite rope of polyester and polypropylene.

Properties
Specific gravity 1,10 (sinks)
Chemical resistance Good
Melting point 265ºC / 165ºC
Construction 3 or 4 strand
UV-resistance Excellent
Abrasion resistance Exceptional
Water absorption Yes
Elongation Low

Technical specifications

Breaking load values stated shall be reduced by 10% in the case of a 4-strand rope.

Diameter (mm) Diameter (inches) Size Circ. (inches) Weight (Ktex) Weight (kg/100m) Weight (lbs/100ft) Breaking Load MBL (Kgf) Breaking Load MBL (lbf) Breaking Load MBL (kN) Breaking Load LDBF (Kgf) Breaking Load LDBF (lbf) Breaking Load LDBF (kN)
6 1/4 3/4 20 2.0 1.3 714 1 574 7 643 1 417 6
8 5/16 1 38 3.8 2.6 1 326 2 922 13 1 193 2 630 12
10 3/8 1 1/4 55 5.5 3.7 2 039 4 496 20 1 835 4 046 18
12 1/2 1 1/2 80 8.0 5.4 2 957 6 519 29 2 661 5 867 26
14 9/16 1 3/4 109 10.9 7.3 3 977 8 767 39 3 579 7 890 35
16 5/8 2 141 14.1 9.5 5 201 11 465 51 4 681 10 319 46
18 3/4 2 1/4 178 17.8 12.0 6 526 14 388 64 5 873 12 949 58
20 13/16 2 1/2 221 22.1 14.9 8 158 17 984 80 7 342 16 186 72
22 7/8 2 3/4 268 26.8 18.0 9 789 21 581 96 8 810 19 423 86
24 1 3 311 31.1 20.9 11 829 26 077 116 10 646 23 469 104
26 1 1/32 3 1/4 370 37.0 24.9 13 664 30 124 134 12 298 27 112 121
28 1 1/8 3 1/2 429 42.9 28.8 15 500 34 171 152 13 950 30 754 137
30 1 1/4 3 3/4 503 50.3 33.8 17 437 38 442 171 15 693 34 598 154
32 1 5/16 4 561 56.1 37.7 19 579 43 163 192 17 621 38 847 173
34 1 11/32 4 1/4 635 63.5 42.7 21 924 48 333 215 19 732 43 500 194
36 1 1/2 4 1/2 710 71.0 47.7 24 371 53 729 239 21 934 48 356 215
38 1 9/16 4 3/4 791 79.1 53.2 26 921 59 349 264 24 229 53 414 238
40 1 5/8 5 872 87.2 58.6 29 368 64 744 288 26 431 58 270 259
44 1 3/4 5 1/2 1 060 106.0 71.2 35 078 77 333 344 31 570 69 600 310
48 2 6 1 265 126.5 85.0 41 197 90 822 404 37 077 81 740 364
52 2 1/8 6 1/2 1 480 148.0 99.4 45 989 101 388 451 41 390 91 249 406
56 2 1/4 7 1 720 172.0 115.6 53 433 117 798 524 48 090 106 018 472
60 2 1/2 7 1/2 1 976 197.6 132.8 60 367 133 085 592 54 330 119 777 533
64 2 5/8 8 2 247 224.7 151.0 66 384 146 349 651 59 746 131 714 586
68 2 3/4 8 1/2 2 530 253.0 170.0 74 847 165 008 734 67 362 148 507 661
72 2 7/8 9 2 840 284.0 190.8 81 068 178 721 795 72 961 160 849 716
80 3 1/4 10 3 520 352.0 236.5 100 442 221 434 985 90 398 199 291 887
90 3 9/16 11 1/8 4 950 495.0 332.6 136 235 300 341 1 336 122 612 270 307 1 202
air

Lightweight with high performance

Up to 20% lighter than regular polyester ropes, reducing handling effort without compromising strength or durability.

shield

Superior abrasion resistance

Constructed with twisted cover yarns for exceptional abrasion and heat resistance, even in wet and demanding environments.

water_drop

Low water absorption

Thanks to its composite fiber blend, AlfaThree® and AlfaFour® absorb minimal water, maintaining performance and handling in marine conditions.

sunny

Flexible and UV resistant

Offers long-lasting flexibility, smooth operation, and excellent UV resistance for extended outdoor use.

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