AS 2331.4.7-2006 (R2017)

Table of Contents

Abstract

Specifies a method for determining the resistance of an organic coating on a metallic substrate to penetration by scratching with a needle.
RECONFIRMATION NOTICE
Technical Committee MT-009 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 20 March 2017.
The following are represented on Technical Committee MT-009:
Australasian Institute of Surface Finishing
Australian Chamber of Commerce and Industry
Australian Industry Group
Australian Steel Institute
Bureau of Steel Manufacturers of Australia
Galvanizers Association of Australia
Galvanizing Association of New Zealand
New Zealand Metal Roofing Manufacturers

Scope

This Standard specifies a method for determining the resistance of an organic coating on a metallic substrate to penetration by scratching with a needle.
On soft materials such as aluminium alloys and thin gauge steels substrates below 0.4 mm the needle may deform the substrate rather than scratch the surface. If the substrate is deformed then this test is not valid.
Soft coatings such as polyvinylchloride (PVC) and structured coatings may not give precise results due to the soft nature of the coating and/or the potential for the needle to snag. This method is not applicable to conductive coatings.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 07/04/2017. This standard has been reconfirmed in Australia in 2017 and remains current in New Zealand. Reconfirmation Notice 07/04/2017
Pages
ISBN
Committee	MT-009
Supersedes	DR 06293