Ultrex

Single Braid

HOW TO BUY  

Ultrex

Ultrex is a 12-strand single braid of Ultra High Molecular Weight Polyethylene (UHMWPE) fiber from DSM Protective Materials and enhanced with Yale’s Maxijacket High Performance coating, which supplies superior abrasion resistance. Ultrex's braid angles and twist level are designed to optimize break strength and keep stretch low.

UHMWPE is the most forgiving high-modulus fiber, giving better sheave-cycling capabilities than other high-tech fibers. Ultrex has zero water absorption and maintains its flexibility even in freezing conditions. As is the case for most Yale ropes, the strengths shown in the charts are for spliced ropes.


Ultrex Specifications and Data

Diameter (Inches) Average Spliced Break Strength *(Lbs) Minimum Spliced Break Strength *(Lbs) Maximum Working Load 5:1 **(Lbs) Weight (Lbs/100f)
1/16 800 720 160 0.1
1/8 2,200 1,980 440 0.3
5/32 3,400 3,060 680 0.5
3/16 6,000 5,400 1,200 1.0
1/4 10,000 9,000 2,000 1.7
5/16 14,800 13,320 2,960 2.4
3/8 20,000 18,000 4,000 3.6
7/16 26,500 23,850 5,300 4.6
1/2 37,400 33,660 7,480 6.4
9/16 45,000 40,500 9,000 8.0
5/8 53,000 47,700 10,600 9.5
3/4 75,000 67,500 15,000 14.0
7/8 98,000 88,200 19,600 17.9
1 120,000 108,000 24,000 24.2
1-1/8 148,000 133,200 29,600 28.8
1-1/4 172,000 154,800 34,400 33.9
1-5/16 184,000 165,600 36,800 41.8
1-1/2 245,500 220,950 49,100 49.7
1-5/8 285,000 256,500 57,000 62.0
1-3/4 330,000 297,000 66,000 74.2
2 390,000 351,000 78,000 90.4


* Knots and abrupt bends significantly reduce the strength of all ropes and lower the maximum working load.
** Working load is based on static or moderately dynamic lifting/pulling operations. Instantaneous changes in load, up or down, in excess of 10% of the rope’s rated working load constitute hazardous shock load and would void the normal working-load recommendation. Consult Yale Cordage for guidelines for working loads and the safe use of rope.

 

Green working 318 ft. lbs./lb.
Red ultimate 8,300 ft. lbs./lb.

Specific Gravity: 0.97

Dielectric Strength: The maximum allowable leakage for clean, dry Ultrex is 75 micro-amperes when tested at 100kV per Yale Method 712-1701 Rev 1 “Routine Production Test.” Absorbed and entrained moisture or impurities will increase rope’s conductivity dramatically.


Maximum Working Load
Minimum Break Strength
Average Break Strength

Ultrex Splicing Instructions

Approved Splice Technique: #10015112, #10018009.