Abstract
Abstract Aluminium is a lightweight and malleable metal. So it is widely used for several exterior applications including coffee industry storefronts. The surface of these applications needs hardness characteristics to be more scratch resistant and have attractive aesthetics. One method to improve these characteristics is anodizing. This research aims to produce a harder and more attractive exterior. The method in this research is to conduct aluminium experiments and then anodizing using time variations (12, 20, 28, 36 and 44 minutes). In order to make the hardness safe and durable when used, the anodized aluminium is tested using a hardness test. The optimum value of the test results will be compared with the quality of exterior products on the market. This information will be useful for the aluminium industry to improve the quality of the products produced.
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