The anodically oxidized surface can be left in the original natural shade, or it can be colored.
Non-dyed anodizing:
In clear anodizing the color of alumina is close to that of aluminum. In higher layers, it is possible to observe a change in shade to pale yellow or pale gray, according to the type of alloy.
The hard anodizing results in natural tint depending on the alloy and ranges from gray to olive green to dark brown.
Color anodizing types:
Clear aluminium anodizing
- organic color:
- black tint
https://www.europur.net/aluminum-anodizing/color-anodizing#sigProIdfc7ea2f050
- purple tint
https://www.europur.net/aluminum-anodizing/color-anodizing#sigProIdb680fd4551
- orange tint
https://www.europur.net/aluminum-anodizing/color-anodizing#sigProId8932fb1fc8
- gold tint
-other tints
https://www.europur.net/aluminum-anodizing/color-anodizing#sigProId18a06d55b5
- electrolytic dying from silver to black C31 to C35 and INOX color with stainless steel look
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Hard anodizing
- black tint
Colored anodizing is characterized by high uniformity in appearance, wear and scratch resistance and lightfastness.