WARNING Persons carrying out tests based on this Standard should be familiar with normal laboratory practice.

This Standard does not purport to address all of the safety problems, if any, associated with its use.

It is the responsibility of the user of this Standard to establish appropriate safety and health practices.

NOTE 1 The method described enables a rapid check to be made for the continuity of a thin coating.

In cases of doubt regarding a visible fault on the surface of a coating, the use of this method makes it possible to verify whether the fault corresponds to a local gap in the coating which exposes bare metal.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 2085: 2010 Anodizing of aluminium and its alloys-Check for continuity of thin anodic oxidation coatings-Copper sulfate test (MOD)

The symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ lEC Guide 21-1.

The method is applicable to all oxidation coatings formed by anodizing aluminium and its alloys, cast and wrought, and is suitable for most aluminium alloys, except those in which the copper content is 6 % or greater.

NOTE 1 If the thickness is known with sufficient precision, determination of the mass per unit area (surface density) of the coatings will enable its apparent density to be calculated.

Conversely, if the conditions of application of the coating and its density are known, the determination of its mass per unit area (surface density) can permit calculation of the average mass and an approximate evaluation of the thickness.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 2106: 2011 Anodizing of aluminium and its alloys-Determination of mass per unit area (surface density) of anodic oxidation coatingsGravimetric method (MOD)

The symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ lEC Guide 21-1.