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Knowledge Bank

WIOPEDIA - The WIOTEC® electroplating encyclopaedia

Knowledge from A - Z



A silvery-white metal that does not oxidise and is chemically very resistant. The best example in everyday life is bathroom fittings.
Therefore, chromium and its compounds can be used in a wide variety of ways:

Catalyst: chromium enables or accelerates chemical reactions in catalysts.
Hard chrome plating: Electroplated coatings (up to 500 µm) as a wear and corrosion layer on steel, cast iron and copper. Aluminium can also be chrome-plated after application of an intermediate layer (hard chrome-plating of aluminium cylinders in engine construction).
Decorative chrome plating: Galvanic deposition of a chrome layer (≤1 µm) as decoration with an intermediate layer also of nickel or nickel-copper as corrosion protection. Plastic parts are also chrome-plated.
Alloying element: Chromium is contained as an alloying element in corrosion- and heat-resistant stainless steels and non-ferrous alloys.
Coloured glass bottles: Chromium(III) compounds give glass an emerald green colour.
Chromates and chromium dioxides: They are used as colour pigments in paints and dyes.
Safety instructions: Chromium (VI) compounds are extremely toxic and classified as carcinogenic. They cause irritation to eyes, skin and mucous membranes. Chromium(VI) has been banned in the electrical industry since 2006 (EU Directive on Electrical Appliances) and in the automotive industry from 2007 (EU End-of-Life Vehicle Directive).

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Other popular topics that are often clicked on include information on plastic finishing, metal finishing, chrome plating, galvanising, laser engraving or even tin plating:

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WIOTEC® Ense GmbH & Co. KG
Auf den Geeren 9-11
59469 Ense-Höingen, Germany

WIOTEC® Arnsberg GmbH & Co. KG
Wagenbergstraße 55
59759 Arnsberg, Germany

+49 2938 97833-0
+49 2938 97833-20

From metal to precious metal
The company WIOTEC® is your specialist for surface finishing and metalworking. In our electroplating shop, which is managed according to the latest environmental standards, we are capable of finishing both small parts and long parts of up to six meters. This makes us one of the leading and most efficient decorative surface coaters in Europe.

Our most important resource is our employees - with their commitment, competence and experience. Together with them, we work out and develop individual and tailor-made solutions for our customers. From detailed consultation and planning to purchasing, mechanical and chemical pre-treatment, professional electroplating and supplementary services - WIOTEC®'s range of services leaves nothing to be desired.



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Claudia Schäfer
+49 2938 97833-11

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