Aluminum naturally forms an oxide layer ... leading to the bright colors you often see on anodized pieces. In this process, the lye is used to strip the surface. Then it’s on to anodization ...

Anodizing is an electrochemical process some jewelers use to change the color of metals such as titanium, aluminum, and niobium. Dipping a reactive metal into a "bath" mixture of low-sudsing ...

Hard anodized aluminum is used in many different industries ... There are different hard anodized colors available that include clear, black stain, and a matte/grainless finish.

Handrail finishes are available in a wide range of different patterns, colors, and textures. Aluminum systems can be anodized with clear and bronze options, or powder-coated in almost any color ...