About electro polishing (EP) of aluminum

About electro polishing (EP) of aluminum

The image below shows a sample of an electropolished aluminum product.

Similar to stainless steel, aluminum has a directional crystal structure when it is rolled into a round bar. As a result, the crystal structure differs greatly between the side and cross section of the bar material. Due to the electro polishing process, you can see the difference in the photo [after treatment], the side has gloss finish, cross section has satin finish as shown.

[Before EP treatment]

[After EP treatment]


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