ZM is a metallic coating applied to steel which is made up of a chemical composition which includes Zinc, Magnesium and Aluminium. The unique composition offers excellent corrosion protection which is equal to Hot Dipped (aka Post) Galvanized steel, as well as several additional. The galvanization process is the primary anti-corrosion treatment for cable trays. The quality of the zinc coating directly determines the tray's service life and application scenarios. The following provides a comprehensive explanation, covering standards, ranges, testing, and special application. Legrand's offer of global solutions for wiremesh cable trays (and accessories) is one of the most complete on the market. This coating is specifically engineered to withstand demanding environments, delivering over 1,000 hours of resistance in salt spray tests, thereby surpassing the performance of standard. Our market-leading cable tray system is now available in ZM (Zinc Magnesium), as well as existing finishes (pre-galvanized, hot-dip galvanized, powder coated and stainless steel). However, they have some signifi cant differences.
[PDF Version]