Various Substrates for Powder Coating
Aluminium,steel,zinc alloys,copper and galvanized steel are common metals on which powder coatings are applied. In a number of cases where normal service conditions apply, satisfactory properties can be obtained on thoroughly cleaned metal.
For aluminium and its alloys,performance can be upgraded using a proprietary chromate conversion coating, even though the clean surfaces are easily coated and adhesion is excellent
For iron/steel surfaces maximum corrosion and salt spray resistance are given by a zinc phosphate conversion coating.
With all zinc based substrates such as Zintec, Mazac and Galvanised Steel a suitable phosphate coating is recommended.