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Hexavalent chromium

ZINKTOP
For a long time now, Duroc has been able to offer alternatives to the usual yellow passivation finish of electrolytic zinc plating. These alternatives involve replacing the toxic hexavalent chromium-based yellow passivation with a passivation based on trivalent chromium reinforced with silicate nanoparticles.
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DELTA PROTEKT
Delta Protekt is a coating based on zinc layers that don’t contain chromium or any other harmful elements. In addition, it offers extreme corrosion resistance with very thin layers.
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Delta Protekt (+) en ProtektSeal (+)

Introduction

The basis of Delta Protekt (+) and ProtektSeal is KL100, a product based on zinc coatings. Zinc ensures the cathodic protection of the substrate. The risk of hydrogen embrittlement is completely ruled out since hydrogen does not occur anywhere in the process.

VH300 or Delta Seal can be applied on top of the layer or layers of KL100. VH300 provides for a considerable increase in the corrosion resistance with minimum thickness and also ensures a decrease in the friction resistance. Delta Seal increases chemical resistance and is available in different colours.

Delta Protekt
Delta
Protekt +
Protekt Seal
Protekt
Seal +
8-10 µm
10-12 µm
12-15 µm
16-20 µm
480 h RR *
720 h RR *
600 h RR *
720 h RR *
2 layers KL100
2 layers KL100
+ 1 layer VH300
2 layers KL100 + 1 layer Delta Seal
2 layers KL100
+ 2 layers Delta Seal
 
Protects against chemicals (acids, alkalines, oils, cleaners, petrol, ...)
Colour = Silver
Different colours (standard = silver and black)

 

3 different coefficients of friction
VH315 : 0,12 - 0,18 (PSA, Renault)
VH301 GZ : 0,09 - 0,14 (VDA)
VH302 GZ : (Ford, Volvo)
GZ variant for lower coefficient of friction
No risc of hydrogen embrittlement
Free of hexavalent chromium (Cr6+)
In accordance with European directives : End of Live Vehicle and Waste electrical and electronic equipment
2000/53/EG en 2002/95/EG

* There might be slight differences based on the steel type and geometry

Typical applications

Delta Protekt is an ideal coating for parts that require very high corrosion resistance or for high-quality steels in order to exclude the risk of hydrogen embrittlement.

ProtektSeal combines similar properties with the added possibility of producing the final layer in different colours. Different colours help to prevent the incorrect use of parts. Parts with minimum differences are so unequivocally distinguishable that incorrect use becomes impossible. For example, bolts with slightly differing length or diameter.

Furthermore, the coatings offer an extreme corrosion resistance with restricted thicknesses, making them a superior alternative to thermal galvanising and a cheap alternative to stainless steel.

 




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Corrosion protec-tion in color !
Would you like a coating with high corrosion resistance in a different colour?
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Delta MKS / Magni

Duroc is the licensee for the high quality Delta MKS product range from Dörken - MKS and Magni throughout the Benelux.
www.doerken-mks.com

www.magnieurope.com

©  Duroc 2005