Chromate conversions produce a clear chemical film on the surface of aluminium to facilitate electrical conductivity and to increase corrosion resistance. In addition to being a specified finish, chromate conversions are also suitable as a pre-treatment for painting and powder coating as well as offering excellent corrosion resistance. Chromate conversions have a clear finish.
RoHS & REACH Compliant - Hexavalent chromium free processes. Graph use technologically advanced trivalent processes.
Corrosion resistance - chromate conversion coatings produce a film on the aluminium surface that resists corrosion, especially that which is caused by moisture.
Cost – chromate conversion provides an economical base for paint and rubber adhesion, greatly enhancing a product’s ability to form a bond with the aluminium. Because electrical conductivity is maintained, chromate conversion is often used in conjunction with anodising.
Electrical Conductivity - chromate conversion allows an un-anodised surface to be used for an electrical contact. Commonly recognized by its proprietary trade names Surtec 650, Alodine® or Iridite®, chromate conversion coatings are some of the most widely used surface finishes for cast aluminium.
Diversity of substrates - Graph can work with nearly any wrought, heat-treatable or cast aluminium alloy to provide an aluminium chromate conversion coating as a final application or paint base for powder coating services.
Delicate and Difficult Geometries - Graph specialises in aluminium chromate conversion coatings on delicate parts using custom-engineered rack fixtures when required to ensure even the most delicate parts are handled properly. Graph has a working R&D relationship with several tooling manufacturers.
RoHS and REACH Compliance - Graph is at the forefront of environmental compliance and can certify our aluminium chromate conversion coatings as needed to the current RoHS and REACH regulations.
Metal finishing specialists: aluminium anodising (hard/clear/colour). Chromate conversion. Spray paint facilities. Metal surface Linishing. ISO 9001/14001/18001 accredited.