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What tests are used to evaluate an anodized finish?
There are many different tests used to evaluate anodized finishes. Some of the most commonly used tests are as follows:
American Society for Testing and Materials (ASTM).
B136-84 (2008)e1 每 Standard Method for Measurement of Stain Resistance of Anodic Coatings on Aluminum
B137-95 (2004) 每 Standard Test Method for Measurement of Coating Mass Per Unit Area on Anodically Coated Aluminum
B244-09 每 Standard Test Method for Measurement of Thickness of Anodic Coatings on Aluminum and Other Nonconductive Coatings on Nonmagnetic Basis Metals with Eddy-Current Instruments
B680-80 (2004) 每 Standard Test Method for Seal Quality of Anodic Coatings on Aluminum by Acid Dissolution
B117-07a 每 Standard Practice for Operating Salt Spray (Fog) Apparatus
These are just a few examples; many other standard test methods may be used to test anodized aluminum.