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ASTM B499 – Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals


This test method covers the use of magnetic instruments for the nondestructive measurement of the thickness of nonmagnetic coatings over ferrous or other magnetic base metals.

It is intended to supplement manufacturers’ instructions for the operation of the instruments and is not intended to replace them.


coating thickness; magnetic method; nonmagnetic coating; magnetic basis metal; ferrous metal


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