Type I (Chromic Acid) Anodizing
Chromic Acid anodizing is a metal coating process used when the application calls for a thin coating and a high level of corrosion resistance. Type I is achieved by a chemical conversion processes involving immersion of an aluminum component in a chromic acid bath.
Type I anodizing is used in high stress applications, primarily in aerospace applications. It is generally used as a base for paint or adhesives or can be used as a mask for Type III (Hardcoat) anodizing.
- Corrosion resistance
- Dielectric for electrical resistance
- Adds very thin anodic layer (usually approximately 0.0001 inch)
- MIL-A-8625F type I
- AMS 2470
- In-house salt spray testing
- In-house NDT testing
- Normal turn time is three to five working days (without masking)
- Masking may increase turn time
- Expediting available, when possible for an additional fee