Galfan is coating composed of zinc-aluminum alloy, it has improved corrosion resistance and formability compared to zinc alone. Galfan improves corrosion resistance by 50% or more over traditional galvanization. Thus it can be used to replace thick galvanized coating and post-galvanizing treatments. A 10-micron galfan coating can replace a 20-micron galvanized coating, providing better weldability, drawability and corrosion resistance.
The most commonly used two types of Galfan wire for Gabion production:
Zn5%Al coated Gabion
Zn10%Al coated Gabion
Zn5%Al , or Zn-5Al-MM, Zinc-5 % Aluminum-Mischmetal Alloy, consists of 95% zinc and 5% aluminum.
Zn10%Al , or Zn-10Al-MM, Zinc-10 % Aluminum-Mischmetal Alloy, consists of 90% zinc and 10% aluminum.
The ductility and strong anti-corrosion properties of galfan make it a coating highly suited for Gabion wire mesh production.Galfan wire gabion is more and more polular worldwide.