How do you color aluminum? - SAF - Southern Aluminum ...
There are four ways to color aluminum: Dye: The freshly anodized part is immersed in a liquid solution that contains dissolved dye. The porous anodic coating absorbs the dye. The intensity of color is related to the thickness of the anodic film the dye concentration immersion time and temperature among other things. Electrolytic Coloring (a.k.a. "two-step") – This is the process that SAF uses. After anodizing the metal is immersed in a bath containing an inorganic metal …
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