Chromic anodic oxidation

Sub-layer before painting, corrosion protection and insulation.

 
Coating thickness 2 to 7 μm
Excess thickness caused by the deposit 1/3 of the thickness deposited
Hardness Varies depending on the alloys
Conductivity Insulating
Weldability Not weldable
Salt spray test resistance 500 h according to ISO 9227 and ASTM B 117 standards
Paint adhesion Yes
Slip Good
Appearance Grey, greenish or black
Substrate Aluminium and its alloys
Capacity Length Width Height
1,300 mm 650 mm 900 mm
Treatment techniques Single parts or Frame
Comments Sub-layer before painting
Corrosion protection
Insulation
Less weakening than sulphuric anodic oxidation