Common Anodizing Specifications
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- Anodizing Job Checklist
- Preparing Aluminum For Finishing
- Common Anodizing Specifications
- Anodizing Dye Colors
- Aluminum Finish Specification
- Military Specification Anodizing (Mil-A-8625)
- Aluminum Coil Anodizing Guidelines
- Extrusions & Sheet Poster
- Custom Anodizing
- Cut-to-Length Aluminum Extrusions
- How to Decide Between Anodizing, Painting, and Powder Coating
- SAFinish
- Aluminum Finishing – Painting vs Anodizing Features
- Appearance and Color Variation
- How to Specify Anodized & Painted Finishes
- Color Range Samples for anodizing
- Anodic Coating Designations
- Aluminum Sheet: Anodizing – Integral Color (Duranodic)
- Integral Color (discontinued) vs. 2-step Anodizing
- SAF adds acid etching to anodizing process
- Glossary
COMMON ANODIZING SPECIFICATIONS
The Aluminum Association Designation System divides finishes for aluminum anodizing into three major categories: Mechanical Finishes (M), Chemical Finishes (C), and Coatings (e.g. A). The Coatings category includes Anodic Coatings (A). Various types of anodized finishes are designated by the letter “A” followed by a two-digit number that designates specific anodizing specifications for finishes. These may be used with other designations to specify a complete finishing system. When designations for the anodic coating are used alone, the pretreatment is usually left up to the anodizer to determine best fit for the product and its end use.
CLEAR ANODIZING SPECIFICATIONS
| SAF | Aluminum Association | Alcoa | Coating Thickness |
| SAF200 | A21 | 200r1 | 0.00075″ – 0.0002″ |
| SAF201 | A21 | 201r1 | 0.0002″ – 0.0003″ |
| SAF202 | A21 | 202r1 | 0.0003″ – 0.0004″ |
| SAF204 | A31 | 204r1 | 0.0004″ – 0.0007″ |
| SAF215 | A41 | 215r1 | > 0.0007″ |
INTEGRAL COLOR (DURANODIC) SPECIFICATIONS: BRONZES AND BLACK
Discontinued by SAF
| SAF | Aluminum Association | Alcoa | Color (Bronze) |
Coating Thickness (SAF) |
| SAF311 | A42 | 311r1 | Light | |
| SAF312 | A42 | 312r1 | Medium | |
| SAF313 | A42 | 313r1 | Dark | > 0.0007″ |
| SAF314 | A42 | 314r1 | Statuary | |
| SAF335 | A42 | 335r1 | Black |
2-STEP ANODIZING SPECIFICATIONS
Developed as a cost effective alternative specification to Integral Color. Color is independent of coating thickness.
| SAF | Aluminum Association | Class | Color | Coating Thickness |
| SAF342 | A34 | II | Light Bronze | 0.0004″ – 0.0007″ |
| SAF343 | A34 | II | Medium Bronze | 0.0004″ – 0.0007″ |
| SAF344 | A34 | Dark Bronze | 0.0004″ – 0.0007″ | |
| SAF345 | A34 | II | Statuary Bronze | 0.0004″ – 0.0007″ |
| SAF346 | A34 | II | Black | 0.0004″ – 0.0007″ |
| SAF442 | A44 | I | Light Bronze | > 0.0007″ |
| SAF443 | A44 | I | Medium Bronze | > 0.0007″ |
| SAF444 | A44 | I | Dark Bronze | > 0.0007″ |
| SAF445 | A44 | I | Statuary Bronze | > 0.0007″ |
| SAF446 | A44 | I | Black | > 0.0007″ |
