Stainless steel 304 wire rope with 3x7 hollow core standard construction is used as a guard rope, and in oceanography applications such as anchor mooring, salvage operations, or maneuvering underwater scientific instruments. Stainless steel 304, also called 18-8, is corrosion-resistant, and withstands high temperatures for a wide range of operation. Stainless steel 304 is a versatile material, commonly used, versatile material used in a wide variety of applications, and in saline atmospheres. 3x7 hollow core has three strands of wire rope with seven wires in each strand, formed helically around a hollow core. 3x7 hollow core is flexible and fatigue-resistant.
Wire rope, also called wire cable, is an assembly of wire strands formed helically around a central core. It is used for pulling, lifting, rigging, hoisting, and motion-control applications most commonly found in the manufacturing, marine, oil, mining, fiber-optics, aircraft, automotive accessory, and construction industries. A combination of characteristics including material, finish, construction, diameter, length, and breaking strength combines to give each rope its performance ability. Wire rope materials are selected for properties such as strength, elasticity, conductivity, and chemical- and weather-resistance. For strength purposes, most wire rope is made of bright (uncoated or bare) wire. However, it is also produced in a variety of finishes, such as polypropylene (PE), vinyl (PVC), or nylon. These coatings can increase overall durability and strength, and allow for specific use. The breaking strength for wire rope is the strength at which new wire rope will fail under a stationary load. Breaking strength is not considered safe working load (SWL) limit.