Copper foil tape and galvanized steel tape can both be used for cable armoring, with each having its own advantages and disadvantages.
Copper foil tape is often used for shielding and grounding purposes due to its high electrical conductivity and corrosion resistance. It can also provide electromagnetic interference (EMI) shielding and can be easily soldered for grounding purposes. However, copper foil tape can be relatively expensive compared to other materials.
Galvanized steel tape, on the other hand, is often used for mechanical protection and cable armoring due to its high tensile strength, durability, and resistance to corrosion. It can provide an extra layer of protection to cables and is more cost-effective than copper foil tape. However, it is not as effective at providing EMI shielding and grounding as copper foil tape.
Ultimately, the choice between copper foil tape and galvanized steel tape for cable armoring depends on the specific requirements of the application, such as the level of shielding and grounding needed, the mechanical stresses the cable will be subjected to, and the overall cost constraints.