Wire Rope Specification Overview

Wire Rope Specifications – as a topic – covers a LOT of ground…

The Specification of a wire rope includes the:

    • base material (Comparing Stainless and Galvanised Wire Rope);
      • material relates to physical properties of the wire such as corrosion resistance, work hardening, and elasticity
      • basically, the material is the core building block affecting the behaviour of the wire while in use
    • grade (Stainless Grades and Galvanised Grades)
      • grade relates to the classification of material based on alloy composition
      • basically, each separate material has a grading system managed by a body or tradition that specifies the ‘rules’ that classify the alloy composition of a material according to a “grade”/scale
    • structure (e.g. 1×19 vs 6×36)
      • structure relates to the number of fibres/strands/bundles.
      • basically, the flexibility varies directly with the number of fibres and strength (MBS) varies inversely with the number of fibres
    • core (e.g. FC vs IWRC)
      • core relates to the “central component” upon which all fibres/strands/bundles  of a wire rope are wrapped in a pattern
      • basically, the flexibility and strength of the wire rope varies directly as the flexibility and strength of the core.
    • Lay (e.g. RHOL)
      • lay relates to the wrapping pattern of fibres/strands/bundles about the core
      • basically, the lay of a wire rope affects more subtle behaviours beyond strength  and flexibility such as rotation and surface ‘traction’
    • Diameter
      • diameter relates to the relevant fittings of the wire rope as well as strength and flexibility.
      • basically, the strength (MBS) varies directly with the diameter of the wire and the flexibility varies inversely with the diameter of the wire.

As a product, Wire Rope has a history and uses some unique terms

In general, Wire Rope Structures greatly affect how Wire Rope behaves.

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