Figure 13. Compacted Wire Rope Cross-sections.
Various wire rope constructions are available with a plastic coating applied to the exterior of the rope. Small diameter galvanized and stainless steel wire ropes with plastic coating are common. The plastic coating can provide protection against corrosion and in some cases reduce wear of the rope and other rigging components. Plastic coated ropes can be difficult to inspect. Nominal strengths for plastic coated ropes are based on the diameter and grade of the rope prior to coating.
Plastic filled wire ropes are wire ropes in which internal spaces are filled with a matrix of plastic. The plastic extends to, or slightly beyond, the outer circumference of the rope. Plastic filling may improve bending fatigue life by reducing internal and external wear. Nominal strengths for plastic filled ropes are based on the diameter and grade of the rope prior to plastic filling.
Plastic Coated IWRC
Plastic coated IWRC wire rope is wire rope which incorporates a plastic coated or plastic filled IWRC. The plastic coated or plastic filled IWRC reduces internal wear and may increase bending fatigue life. Nominal strengths for plastic coated and plastic filled ropes are based on the diameter and grade of the rope with an uncoated or unfilled IWRC.