Integral Color vs. 2-Step Anodizing
SAF has adopted the 2-Step Aluminum Anodizing Process (Electrolytic Coloring), and discontinued the Integral Color (Duranodic) Anodizing process. The differences between the two Anodizing processes help to show why.
Integral Color (Duranodic) DISCONTINUED – no longer offered by SAF
- Harder anodized coat (more dense) than 2-step.
- Generally a thicker anodized coat, unless Class I 2-step is specified.
- Single step process.
- Hides welds a little better.
2-Step (Electrolytic Coloring)
- Chief benefit: 2-Step Anodizing does not craze during fabrication as badly as Integral Color.
- Another plus for architectural applications: Anodized Color is independent of coating thickness.
- Lower energy cost to produce
- Better aluminum availability for both batch & coil processing
- In general, more Anodizers prefer the 2-step Anodizing process.