Alloy 625 wires are used for the coating process. Alloy 625 wire is nickel chromium-based alloy and used for its high strength, excellent fabricability includes joining and corrosion resistance property. Alloy 625 service temperature ranges from very low to 1800°F (982°C). In alloy 625 strength is derived from stiffness effect of molybdenum and niobium on Ni-Cr matrix thus no requirement of precipitation hardening treatments. In alloy 625 this mixture of elements also is responsible for superior protection to a wide range of corrosion and high-temperature effects such as carburization and oxidation. Alloy 625 wires contain some properties that make it an excellent choice for seawater applications and also prevent pitting, and crevice corrosion, high fatigue, and tensile strength, and provide resistance to chloride-ion stress corrosion cracking.
