A deep flat, mottled black surface, blackened aluminum is a material which has use in limited architectural applications, and may be attractive for those seeking a unique appearance within certain parameters.
Blackened Aluminum Appearance
The surface has a rough leathery texture with a flat, black sheen. The surface appears different when viewed from different angles. The finish obtained is not unlike a photographic negative of a smooth concrete surface with all the subtle variations that give concrete its unique attributes. Blackened aluminum appears mottled flat black with streaks of occasional whitish deposits.
The black color obtained is flat and mottled due to the variable coarse nature of the aluminum surface achieved. The roughened surface should be sealed with a clear coating to resist ultraviolet light and protect from heat absorption.