Galvanized vs Aluminized vs ZAM Steel — The Complete Comparison Guide
In today’s competitive global steel market, three coating systems dominate industrial and construction applications:
· Galvanized Steel (GI)
· Aluminized Steel
· ZAM (Zinc-Aluminum-Magnesium Steel)
This in-depth guide will help engineers, procurement managers, contractors, and distributors understand the differences, advantages, limitations, and best application scenarios for each material.
1. What Is Galvanized Steel (GI)?
Galvanized Steel (GI steel) is carbon steel coated with a layer of zinc through a hot-dip galvanizing process. The zinc layer protects the base steel from corrosion by acting as a sacrificial anode.
