About Process

Zinc flake coatings are non-electrolytically applied coatings, which provide good protection against corrosion. These coatings consist of a mixture of zinc and aluminum flakes, which are bonded together by an inorganic matrix.

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Groups of Zinc Flake Coating 

• Solvent-based Cr(VI)-free zinc flake coatings.

• Water-based Cr(VI)-free zinc flake coatings.

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Characteristics 

Today, these are the preferred coatings for fasteners and other parts in the automotive industry, as they offer various advantages:

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• Good appearance (coloring)

• Very good protection against corrosion (240 - 1,500 hours, depending on specification and coating thickness)

• Resistant to extreme temperatures

• Good chemical resistance

• Environmentally friendly

• Good friction characteristics (on bolts and nuts)

• No warm-loosening torque

• No risk for high-strength fasteners of any hydrogen embrittlement

• Electric conductivity

• Other assembly properties