Phosphated steel wire is commonly used in optical cables to provide strength and support. The phosphate coating on the wire improves adhesion with other materials used in the cable, such as plastics or resins, while also providing corrosion resistance.
Aramid yarn, on the other hand, is a synthetic fiber with high strength and heat resistance. It is often used in optical cables as a strength member, providing additional support and durability.
Both phosphated steel wire and aramid yarn are important components in the construction of optical cables and can help ensure the overall quality and longevity of the cable.