PURAL AND ARMACOR: The Most Durable Coating

Everything you need to know about Pural and Armacor

Armacor galvanized steel is a special development of Corus, and is specifically designed for use in construction. The organic coating is made up from a comprehensive system of soil (20 microns) and a Polyurethane layer of modified Polymide (30 microns). The chemical composition and characteristics of Armacor and Pural are almost identical. The difference in name is due to the fact that Armacor is a registered trademark of Corus, and Pural is a registered trademark of Ruukki. In terms of durability, the Armacor material is highly resistant to corrosion, UV rays and mechanical damage. In fact, the think layer of soil is what fosters extreme resistance to corrosion. In comparison, the thickness of the soil layer in the Armacor material is 20 microns, while the polyester-based soil is 5-7 microns. The polymer coating, which is part of the Armacor material, is applied to hot-dip galvanized steel, with a minimum layer of zinc coating of 375 g/m 2.  That compared with polyester coated steel with a zinc layer of 180 g/mincreases resistance against corrosion of the material. Polyurethane is part of the coating layer and provides superior resistance to UV rays. This significantly increases the life cycle of the metal. Furthermore, Polyurethane is very resistant to hydrochloric, sulfuric and nitric acids – chemicals that are common in an industrial atmosphere. Also, a salt spray test demonstrated that the Armacor material is highly durable in marine climates. In addition to the Polyurethane coating on the North American market, there is also high quality polyester-modified polyamide. This material is lower in comparison with Armacor in terms of resistance and longevity in industrial environments. Materials with thick polyester coating will fade more rapidly, especially in industrial conditions; thus, corrosion may develop much earlier.