Description

For Aluminum Conductor Steel Supported designs with average working temperatures of 80°C, the drive to increase a conductor’s current carrying capacity by enabling it to operate at higher temperatures results in emergency peaks up to 250°C. Galvanized (zinc) coatings are generally limited to a maximum service temperature for extended times of 180-200°C. This paper describes how Bezinal® ZnAl coatings resist to temperatures as high as 350°C with no significant negative effects on either coating ductility or salt spray corrosion resistance.