Aluminum Anodization Provides:

• Superior Paint Base
• Electric Insulation
• Insures adhesion of organic coatings (i.e. zinc chromate, primer, paints & lubes)
• Minimizes Galvanic Corrosion

Type I - Chromic Acid Anodize

• Film produced is solid, thinner (0.02-0.05 MIL), darker in color, and is harder than sulfuric acid films of the same thickness.
• 50% penetration in the substrate / 50% growth over original dimension of part
• Favored if there is a possibility of solution entrapment in joints, recesses, and/or weldments.
• Chronic Acid leaves no corrosive residue
• EXCELLENT FOR COATING ALUMINUM CASTINGS

• Favored for applications where hardness & resistance to erosion is required
• Film produced are of greater thickness (0.1-1.0 MIL)
• 67% penetration in substrate / 33% growth over original dimension of parts
• Its permeable nature prior to sealing is used in the production of color surface finishes on aluminum & it's alloys.
• Porous aluminum oxide absorbs dyes well & sealing helps prevent color loss in service, although color-fast, they tend to bleach under continued direct sunlight.

Type III - Hard Anodizing

Hard Anodizing also uses a sulfuric acid electrolyte, except that the baths have higher sulfuric acid concentration, lower temperatures, & higher current density which increases film transparency.

• Film Produced is 1-2 MILS for most applications & have a hardness of 65 Rockwell "C"
• 50% penetration in the substrate / 50% growth over the original dimensions of the parts.
• Coatings have heightened surface roughness and are softer on the top surface than down in the core of the coating.
• Sealing of the coating reduces wear resistance & fatigue strength. Sealing is only recommended when corrosion resistance is a factor

2-Step Coloring -

• Enhances the characteristic properties of aluminum
• Strengthens the aluminum to a hardness of steel
• Provides higher wear & electrical resistance
• Excellent candidates for exterior applications such as building storefronts and windows.
• Does not fade in the rain or sunlight.

Colors Offered Are:

• Champagne
• Light Bronze
• Medium Bronze
• Dark Bronze
• Black