Hydraulic company chooses new coating methods
A
Stauff UK product story
Edited by the Engineeringtalk editorial team
Apr 4, 2007
Walter Stauffenberg (Stauff) has abandoned the use of the traditional plating method of Zinc and yellow chromating (A3C) in favour of the alternative Zinc - Nickel coating and passivation.
Walter Stauffenberg (Stauff) has abandoned the use of the traditional plating method of Zinc and yellow chromating (A3C) in favour of the alternative Zinc - Nickel coating and passivation.
It has been known for some years that the yellow chromating of the surface contains hexavalent chromium.
Hexavalent chromium, or chromium (VI) for short, is classed as carcinogenic and direct contact can cause allergic reactions.
The EU Directive on End of Life Vehicles and the RoHS Directive govern the disposal and recycling of hexavalent chromium.
Bans have already been imposed in recent years, with an exception for chromium (VI) in anti-corrosive coatings due to expire on 1 July 2007.
Whilst Stauff products are not directly affected by this situation, the decision was made to pursue the use of the alternative for both environmental reasons and also importantly to provide real additional corrosion protection.
The performance of Zinc Nickel coating and passivation is far superior to the alternatives.
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