BS EN ISO 4518:2021
Metallic coatings. Measurement of coating thickness. Profilometric method

Standard No.

BS EN ISO 4518:2021

Release Date

2021

Published By

British Standards Institution (BSI)

Latest

BS EN ISO 4518:2021

Scope

What is ISO 4518 about?   ISO 4518 specifies a method for the measurement of metal coating thickness. This is done by first forming a step between the surface of the coating and the surface of its substrate and then measuring the step height using a profile recording instrument. ISO 4518 covers the instrumentation characteristics and the procedure appropriate to this specific application of profilometric methods.   ISO 4518 is applicable to the measurement of thicknesses of metal coatings from 0,01 μm to 1 000 μm on flat surfaces and, if appropriate precautions are taken, on cylindrical surfaces. It is highly suitable for the measurement of minute thicknesses but, for thicknesses of less than 0,01 μm, surface flatness and surface smoothness are very critical and, accordingly, the method is not suitable for use down to the lowest level of measurement usual for electronic stylus instruments. The method is suitable for measuring coating thicknesses when preparing coating thickness reference standards. BS EN ISO 4518:2021 history

• 2021 BS EN ISO 4518:2021 Metallic coatings. Measurement of coating thickness. Profilometric method
• 1980 BS EN ISO 4518:1980 Metallic coatings - Measurement of coating thickness - Profilometric method