The individual wires that form strands are most commonly available in high-carbon steel, generally supplied in an uncoated, or "bright" finish. Zinc coated, or "Galvanized" rope is available in some sizes and carries a nominal strength of 10% below that of a bright rope. On special request, wire rope can be drawn-galvanized, offering the same nominal strength as a bright rope.
Wires are laid geometrically to form strands, each composed of two or more wires. Breaking these strand configurations into several classifications is the basis for identifying wire rope.
A steel center rope yields a higher strength along with the ability to resist crushing Steel cores are required when the environment exceeds 180Â°(F)