Table 1. Wire Rope Classification

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T M 5 - 3 8 1 0 - 3 0 5 - 1 Illustrated below are a few combinations of basic design constructions (Figure 4- 19). Wire rope is iden- tified by reference to its number of strands, as well as the number and geometric arrangement of wires in the strand (Figure 4-20). 6x7 6x9 WARRINGTON 6X19 SEALE 6X25 FW Figure 4-19. Basic Constructions Figure 4-20. A Single Wire Rope Strand Table 1. Wire Rope Classification Based on the normal number of wires in each strand Classification 6x7 6x19 6x37 6X61 6x91 6x127 8x19 19x7 and 18x7 Description Containing 6 strands that are made up of 3 through 14 wires, of which no more than 9 are outside wires. Containing 6 strands that are made up of 15 through 26 wires, of which no more than 12 are outside wires. Containing 6 strands that are made up of 27 through 49 wires, of which no more than 18 are outside wires. Containing 6 strands that are made up of 50 through 74 wires, of which no more than 24 are outside wires. Containing 6 strands that are made up of 75 through 109 wires, of which no more than 30 are outside wires. Containing 6 strands that are made up of 110 or more wires, of which no more than 36 are outside wires. Containing 8 strands that are made up of 15 through 26 wires, of which no more than 12 are outside wires. Containing 19 strands, each strand is made up of 7 wires. It is manufactured by covering an inner rope of 7x7 left Iang lay construction with 12 strands in right regular lay. (The rotation- resistant property that characterizes this highly specialized construction is a result of the counter torques developed by the two layers.) When the steel wire core strand is replaced by a fiber core, the description becomes 18x7. When a center wire is replaced by a strand, it is considered as a single wire, and the rope classification remains unchanged. There are, of course, many other types of wire rope, but they are useful only in a limited number of applications and, as such, are sold as specialties. They are usually designated accord- ing to their actual construction. 4-29

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