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CELO, global industrial fasteners manufacturer

Zn-Al Flake Coating

Zinc Flake organic coating offers high performance corrosion protection and high durability on screws, with no risk of hydrogen embrittlement. 

It consists of zinc and aluminum lamella flakes in solvent based dispersion. The combination of different base and topcoats enables customization of specific requirements: improve corrosion resistance, provide specific colour and coefficient of friction with integrated lubricants or applied over the base coat. 

For CELO product range, the organic coating is applied in a non-electrolytic dip-spin and final polymerisation takes place in an oven at 200ºC. We can produce in many different colours, being grey, black and blue the most widely used.

The main advantages of Zinc Flake Lamellar coating are detailed below:

  • Excellent corrosion resistance, from 240h to 720h, being possible to get higher values for certain dimensions. 
  • No risk of hydrogen embrittlement as it's not an electrolytic process and no hydrogen is involved in the application process.
  • Solvent resistance.
  • It accomplishes ELV and RoHS European Environmental Directives, it's free of Cr VI, Cadmium, Lead and Mercury.