General Purpose Wire Rope
6×37 classification rope trades some abrasion resistance for flexibility. Each strand carries many more, and much smaller, wires than a 6×19 — most of what we supply is 6×36 Warrington Seale — and the more wires in a strand, the more easily the rope bends.
That makes it the choice where a rope has to run over smaller sheaves, spool tightly, or be handled and spliced by hand, and it is the usual construction for wire rope slings. Where the rope will be dragged or worked in dirt, 6×19 class holds up better.
An IWRC is a small wire rope run down the middle of the rope. It adds roughly 12% to the nominal strength, resists crushing on a drum and holds the rope’s diameter under load — which is why it is standard on cranes and anywhere the rope spools in more than one layer. A fiber core is more flexible and easier to handle, and it will bend around a smaller sheave. It is not as strong and it will crush, so keep it off multi-layer drums and away from heat.
Features
- Abrasion resistant
- Crush resistant
- Fatigue resistant
- No swivel
- Right lay
- Lubricated
- Multi layer spooling
Options
- IWRC or fiber core
- Galvanized
- Stainless steel
- Left lay
What “6×37 class” means
The number is a range, not a count. A 6×37 class rope is any six-strand rope with 27 to 49 wires in each strand — so a 6×36 Warrington Seale is a 6×37 class rope, even though no strand in it has 37 wires. Almost nobody actually makes a rope with 37 wires to a strand; the name is the class, not the rope.
Every construction below is a 6×37 class rope and every one of them shares the strength and weight table on this page. What changes between them is how the rope behaves: more wires per strand means more flexibility and less abrasion resistance. Unless you specify otherwise we supply 6×36 Warrington Seale.
| Construction | Wires per Strand | Where it fits |
|---|---|---|
| 6×31 Warrington Seale | 31 | The stiffest of the class — closest in behavior to a 6×19 class rope. |
| 6×36 Warrington Seale | 36 | The standard 6×37 class rope and what we supply unless you ask otherwise. |
| 6×41 Warrington Seale | 41 | More flexible again. Common in larger diameters. |
| 6×49 Seale Filler Wire | 49 | The most flexible of the group, for large rope that has to bend hard. |
How to read a construction name
- Seale (S)
- Each layer carries the same number of wires, so large outer wires sit directly on large inner wires. The biggest outer wires of any construction at a given size — the most abrasion resistance, the least flexibility.
- Filler Wire (FW)
- Small filler wires pack the valleys between two layers of larger wires. A good middle ground: more flexible than Seale, and the packed section resists crushing.
- Warrington (W)
- The outer layer alternates large and small wires. More flexible than a Seale of the same size, with slightly less abrasion resistance.
- Warrington Seale (WS)
- Three layers combining both patterns. The most flexible of the common constructions and the usual choice once you are into the 6×37 class.
Specifications
Cut to length from stock in Hatfield. Call for reel quantities and lead times.
| Diameter (in.) | Minimum Breaking Force (tons of 2,000 lbs.) | Approximate Weight per Foot (lbs.) | |||||
|---|---|---|---|---|---|---|---|
| IPS IWRC | EIPS IWRC | EIPS Fiber Core | EEIPS IWRC | EEIPS Fiber Core | IWRC | Fiber Core | |
| 1/4 | 2.94 | 3.40 | 3.02 | — | — | 0.116 | 0.105 |
| 5/16 | 4.58 | 5.27 | 4.69 | — | — | 0.18 | 0.164 |
| 3/8 | 6.56 | 7.55 | 6.71 | 8.30 | — | 0.26 | 0.236 |
| 7/16 | 8.89 | 10.2 | 9.09 | 11.2 | 9.90 | 0.35 | 0.32 |
| 1/2 | 11.5 | 13.3 | 11.8 | 14.6 | 12.9 | 0.46 | 0.42 |
| 9/16 | 14.5 | 16.8 | 14.9 | 18.5 | 16.2 | 0.59 | 0.53 |
| 5/8 | 17.9 | 20.6 | 18.3 | 22.7 | 20.0 | 0.72 | 0.66 |
| 3/4 | 25.6 | 29.4 | 26.2 | 32.4 | 28.6 | 1.04 | 0.95 |
| 7/8 | 34.6 | 39.8 | 35.4 | 43.8 | 39.0 | 1.42 | 1.29 |
| 1 | 44.9 | 51.7 | 46.0 | 56.9 | 50.6 | 1.85 | 1.68 |
| 1 1/8 | 56.5 | 65.0 | 57.9 | 71.5 | 63.6 | 2.34 | 2.13 |
| 1 1/4 | 69.4 | 79.9 | 71.0 | 87.9 | 78.2 | 2.89 | 2.63 |
| 1 3/8 | 83.5 | 96.0 | 85.4 | 106 | 94.0 | 3.50 | 3.18 |
| 1 1/2 | 98.9 | 114 | 101 | 125 | 111 | 4.16 | 3.78 |
| 1 5/8 | 115 | 132 | 118 | 146 | 129 | 4.88 | 4.44 |
| 1 3/4 | 133 | 153 | 136 | 169 | 150 | 5.67 | 5.15 |
| 1 7/8 | 152 | 174 | 155 | 192 | 171 | 6.50 | 5.91 |
| 2 | 172 | 198 | 176 | 217 | 194 | 7.39 | 6.72 |
| 2 1/8 | 192 | 221 | 197 | 243 | — | 8.35 | 7.59 |
| 2 1/4 | 215 | 247 | 220 | 272 | — | 9.36 | 8.51 |
IPS = improved plow steel, EIPS = extra improved plow steel, EEIPS = extra extra improved plow steel. Fiber core is stocked in EIPS and EEIPS; IPS fiber core is available on request. Acceptance strength is not less than 2½% below the nominal strengths shown. For Class A galvanized rope (IPS and EIPS only), deduct 10% from the nominal strength.
6×19 and 6×37 classification ropes of the same diameter and grade carry the same nominal strength and the same weight per foot. What separates them is flexibility and abrasion resistance, not capacity.
Need a price or a lead time?
Most stocked items ship the same day from Hatfield. Call and we’ll confirm what’s on the shelf.