Ultrex
Single Braid
Ultrex is the premier 12-strand single braid rope manufactured in the USA by Yale Cordage. Ultrex is made from Dyneema (HMPE) fiber and enhanced with the extremely durable 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.
Ultrex
Ultrex is the premier 12-strand single braid rope manufactured in the USA by Yale Cordage. Ultrex is made from Dyneema® (HMPE) fiber and enhanced with the extremely durable Maxijacket High Performance coating, which supplies superior abrasion resistance. The Maxijacket coating is applied on fiber / strand level, meaning that the coating is applied before braiding. Because of this, Ultrex offers exceptional abrasion resistance and long wear life—even in harsh environments. Ultrex’s braid angles and twist level are designed to optimize break strength and keep stretch low.
Engineered for professionals, Ultrex offers these core benefits:
- Low elongation
- Zero water absorption
- Light weight allows rope to be set in by helicopter
- Superior abrasion resistance with Maxijacket HP coating
- Maintains flexibility even in freezing conditions
- High tensile strength
- Superior wear life
- Easily Spliced
- Strand Level Coated
- Made in the United States with Dyneema Fiber
Dyneema HMPE fiber is manufactured domestically by Avient. HMPE 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. NOTE: The strengths shown in the charts are for spliced ropes.
Ultrex Splicing Instructions
Approved Splice Technique: #10015112, #10018009.
High Performance Single Braid – Eye Splice
High Performance Single Braid – End for End Splice
Ultrex Specifications and Data
| Diameter (in) | Spliced Minimum Breaking Strength (lbf)* | Unspliced Minimum Breaking Strength (lbf)** | Average Breaking Strength (lbf) | Weight (lb/100ft) |
|---|---|---|---|---|
| 1/16 | 950 | 1,000 | 1,100 | 0.1 |
| 1/8 | 1,900 | 2,000 | 2,200 | 0.3 |
| 5/32 | 3,000 | 3,300 | 3,400 | 0.5 |
| 3/16 | 5,400 | 5,900 | 6,000 | 1 |
| 1/4 | 9,000 | 9,900 | 10,000 | 1.6 |
| 5/16 | 13,000 | 14,000 | 14,500 | 2.3 |
| 3/8 | 18,000 | 19,500 | 20,000 | 3.3 |
| 7/16 | 23,500 | 25,500 | 26,500 | 4.5 |
| 1/2 | 33,500 | 36,500 | 37,500 | 6.4 |
| 9/16 | 40,500 | 44,500 | 45,000 | 8 |
| 5/8 | 47,500 | 52,000 | 53,000 | 9.2 |
| 3/4 | 67,000 | 73,000 | 75,000 | 13.8 |
| 7/8 | 88,000 | 96,000 | 98,000 | 17.7 |
| 1 | 115,000 | 125,000 | 130,000 | 24.2 |
| 1-1/8 | 130,000 | 140,000 | 145,000 | 28.7 |
| 1-1/4 | 155,000 | 170,000 | 175,000 | 35.3 |
| 1-5/16 | 170,000 | 185,000 | 190,000 | 41.8 |
| 1-1/2 | 225,000 | 245,000 | 250,000 | 55.6 |
| 1-5/8 | 275,000 | 300,000 | 310,000 | 63.1 |
| 1-3/4 | 295,000 | 320,000 | 330,000 | 75.4 |
| 2 | 355,000 | 390,000 | 395,000 | 89.3 |
| Diameter (mm) | Spliced Minimum Breaking Strength (kg)* | Unspliced Minimum Breaking Strength (kg)** | Average Breaking Strength (kg) | Weight (kg/100m) |
|---|---|---|---|---|
| 2 | 430 | 470 | 480 | 0.1 |
| 3 | 860 | 940 | 960 | 0.4 |
| 4 | 1,300 | 1,400 | 1,500 | 0.7 |
| 5 | 2,400 | 2,600 | 2,700 | 1.5 |
| 6 | 4,000 | 4,400 | 4,500 | 2.4 |
| 8 | 5,800 | 6,400 | 6,500 | 3.4 |
| 10 | 8,100 | 8,900 | 9,000 | 4.9 |
| 11 | 10,500 | 11,500 | 12,000 | 6.7 |
| 13 | 15,000 | 16,500 | 17,000 | 9.5 |
| 14 | 18,000 | 20,000 | 20,000 | 11.9 |
| 16 | 21,500 | 23,500 | 24,000 | 13.7 |
| 19 | 30,000 | 33,000 | 33,500 | 20.6 |
| 22 | 39,500 | 43,500 | 44,000 | 26.4 |
| 25 | 52,000 | 57,000 | 58,000 | 36.1 |
| 29 | 58,000 | 64,000 | 65,000 | 42.8 |
| 32 | 70,000 | 77,000 | 78,000 | 52.6 |
| 33 | 77,000 | 84,000 | 86,000 | 62.3 |
| 38 | 100,000 | 110,000 | 115,000 | 82.8 |
| 41 | 120,000 | 135,000 | 135,000 | 94 |
| 44 | 130,000 | 145,000 | 145,000 | 112.3 |
| 51 | 160,000 | 175,000 | 180,000 | 133.1 |
Working Details
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 the rope’s conductivity dramatically.
