Aluminum Conversion Coating

Removes naturally formed oxides and converts the
aluminum surface to a barrier layer that impedes
corrosion and promotes adhesion. Pilkington utilizes
12-stage immersion tank-line systems with carefully controlled chemistry and rinse water quality. In-house salt-spray testing confirms our coatings meet and exceed MIL standards. Non-chrome aluminum conversion coatings are now available that meet strict RoHS requirements.

Specification	Description	Appearance
MIL-C-5541 Class IA MIL-DTL-5541 Type I Class IA	Hexavalent Chrome Conversion. The industry standard for decades. Typically used when maximum adhesion to paint and corrosion protection is required.	Iridescent, light-to-dark golden yellow.
MIL-C-5541 Class III MIL-DTL-5541 Type I Class III	Hexavalent Chrome Conversion. Typically used when low electrical resistance is required.	Colorless to slightly iridescent.
MIL-DTL-5541 Type II Class IA	Contains no hexavalent chrome. This coating meets RoHS compliance.	Colorless coating typically applied to products requiring RoHS compliance.
MIL-DTL-5541 Type II Class III	Contains no hexavalent chrome. This coating meets RoHS compliance. Thinner coating weight to decrease electrical resistance.	Colorless coating typically applied to products requiring RoHS compliance.