Description
An ISO 9001 :2008 CERTIFIED COMPANY. NSIC – CRISIL RATING SE 3A CERTIFIED
Chemical conversion coatings sometimes referred to as chromate conversion, chem film , Iridite or Alodine refer to a process of applying a thin barrier coating on the substrate to passivated aluminum alloys to slow the formation of corrosion. It is gelatinous film that has self-healing properties and improves paint adhesion on aluminum alloys and die castings. It can also be applied to zinc die castings.
- Materials qualified under Mil-DTL-5541F produce coatings that range in color from clear to iridescent yellow or brown.
- They are all electrically conductive and impart some measure of corrosion protection on the substrate.
- Visual inspection may be difficult since breaks in the coating are not easily seen.
- Type I is Hexavalent Chromate
- Type II is ROHS compliant, hex free chromate. This meets the ROHS and EELV requirements.