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FINISHES
CHROMIC ANODIZE: {Type I anodize}.
Produced in dilute Chromic
Acid solution, this anodize provides a thin film approx .0001
to .0004 thickness. Since only 1/3 of the thickness is
"growth" Chromic Anodize is an excellent choice for Close Fitting
assemblies.
- Good Corrosion Resistance (336 hrs salt
spray}
- Exellent Pre-treatment for
Paints
- Good Electrical Resistance
- Mimimum Metal Fatigue
- Anti-Galling for Close Fitting
Assemblies
SPECIFICATIONS &
CERTIFICATIONS: The Formation and Properties of Anodize
Finishes are described in the "Controlling Document", Mil-A-8625. All other Customer Specs
follow the format and guidelines of those documents. These are
Designated as:
-
Chromic Acid
Anodize:
Type I
-
Sulfuric Acid
Anodize:
Type II
-
Hardcoat
Anodize:
Type III
-
EACH of these "types" are
then sealed
-
Non-Dyed
Seals
Class 1
-
Dyed
Seals
Class 2
Therefore, a "Type I, Class
1" call out specifies a part that is Chromic
Anodized, Non-dyed. NOTE: Type I Coatings
are not as durable as other anodic coatings. Due to
the thin film they also are less capable of accepting
dyes.
Additional Technical and
Engineering information is available at the following "Aluminum
Anodizer's" site, http://www.anodizing.org//what_is_anodizing.html | 
