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The European Union's End Of
Life's Vehicle (ELV) legislation restricts the use of hexavalent chromium
contained on automobiles to 2.0 grams. Although it is European legislation, the
global nature of the automotive industry requires the big three automakers in
the United States and all their top tier suppliers to rewrite their finishing
specifications for the elimination of hexavalent chromium.
As would be expected,
automotive asked the chemical suppliers for an adequate replacement of
hexavalent chromium into a trivalent form that meets the previous corrosion
figures achieved with hexavalent chromium products. The degree of innovation
involved in shifting from hexavalent chromium to trivalent alternatives has
forced the automotive companies to require special approvals for both the
applications and chemistry. Large investments have been made jointly by
applicators such as Greystone Inc., suppliers and automotive engineers to
develop, perfect, and approve these processes of the future.
Due to the large amounts of
research and development, followed by testing, Greystone Inc. and suppliers
currently lead the metal finishing industry in meeting the automotive
requirements for the reduction of hexavalent chromium with trivalent products.
Automotive approved, no other competitive products blend capability,
simplicity, and the economics as well as Greystone Inc. and our suppliers.
Together, Greystone Inc. and our suppliers are in position to lead the future
in metal finishing.
Below is a comparison between
trivalent and standard hexavalent yellow chromates: |
