Type II Sulphuric Acid Anodizing
Type II anodizing is available in Class 1 clear (non-dyed) or Class 2 dyed.
Altech offers Class 2 anodizing in 9 standard colours:
- Black, Grey/Pewter, Red, Orange, Gold, Emerald Green, Forest Green, Blue, and Purple
- Custom colours are available
Typical Type II Anodizing Applications
- Sporting goods
- Marine products
- Electrical products and enclosures
- Architectural aluminum-door frames, windows frames and extrusions
- Lighting fixtures
Type II Anodizing Coating Thicknesses
Coating Thickness of Type II anodizing will vary from 2/10 of a thou (.0002 inches) for clear anodizing to 8/10 of a thou (.0008 inches) for certain colour anodizing.
Type II coatings ranging from 1 thou (.001 of an inch) to 1.4 thou (.0014 inches) are available upon request. Thicker coatings when processed properly will provide harder more durable protection for the aluminum.
Type II Sulphuric acid anodizing can be done on a vast range of aluminum alloys. The less alloying elements in the aluminum the better the result, especially when dying the anodic coating.
Cast alloys are difficult to consistently colour, particularly those with high silicon content.