Standard

BS EN ISO 2931:2018

Anodizing of aluminium and its alloys. Assessment of quality of sealed anodic oxidation coatings by measurement of admittance

Current

•

Published:

28 Feb 2018

1 Scope

This document specifies a method for assessing the quality of sealed anodic oxidation coatings on aluminium and its alloys by measurement of the admittance.

The method is applicable to anodic oxidation coatings sealed in an aqueous medium.

NOTE 1 Results obtained from anodic oxidation coatings sealed by different methods, e.g. hydrothermal sealing and cold sealing, are not necessarily comparable.

NOTE 2 Results obtained from anodic oxidation coatings on alloys containing more than 2 % silicon or 5 % manganese or 3 % magnesium are not comparable with results obtained from anodic oxidation coatings on more dilute alloys.

The method is suitable for use as a production-control test and as an acceptance test where there is agreement between the anodizer and the customer.

Any type of anodized component can be tested by the method described, provided that there is a sufficient area (a circle of diameter about 20 mm) and that the film thickness is greater than 3 µm.

BSI recommends this version of standard for organisations operating in or with the UK. The ISO edition is available here if required.

Product Details

Descriptors

Coatings

Electrical measurement

Aluminium alloys

Electrodeposition

Anodizing

Surface treatment

Non-destructive testing

Impedance measurement

Aluminium

Quality control

Sealing (anodized coatings)

Electrical admittance

Protective coatings

Approval testing

Anodic coating

ICS Codes

25.220.20 Surface treatment

Committee

STI/33

International relationships

Identical to:

EN ISO 2931:2018

ISO 2931:2017

ISBN

978 0 580 92454 5

Publisher

BSI