Table of Contents

1 -  AS 2136-1977 METHOD FOR DETECTING THE SUSCEPTIBILITY OF COPPER AND ITS ALLOYS TO STRESS CORROSION CRACKING USING THE MERCURO
4 -  PREFACE
5 -  1 SCOPE.
5 -  2 DEFINITIONS.
5 -  2.1 Stress corrosion cracking
5 -  2.2 Applied stress
5 -  2.3 Residual stress
5 -  3 TEST PIECES AND THEIR PREPARATION.
5 -  3.1 General.
6 -  3.2 Preparation.
6 -  4 TEST REAGENT.
6 -  5 TEST PROCEDURE.
7 -  6 TEST REPORT.

Abstract

Specifies requirements for the testing reagent and describes two methods of preparation of the reagent. Preparation of test pieces, procedures for carrying out the test and details for the preparation of a test report are given.
RECONFIRMATION NOTICE
Major stakeholders of this publication have 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 29 August 2018.

Scope

This standard describes a procedure for detecting the susceptibility of copper and copper base alloy products to stress corrosion cracking by immersion of test pieces in an acidified solution of mercurous nitrate.
NOTES:
1. The method is not recommended for the testing of assemblies and partial assemblies but such tests are not precluded by agreement.
2. Elapsed time following removal of the test piece from the test solution and subsequent examination should be specified in the product specification.
3. Chemical reagents specified in this standard are highly toxic and should be handled with care. The use of rubber gloves is advisable to prevent contact with the skin.
4. Mercury and mercury vapour are definite health hazards; equipment for their detection is recommended.
5. Volatilization of mercury should only be carried out in a well-ventilated exhaust booth.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 1986 Reconfirmed 14/09/2018. This standard has been reconfirmed in Australia in 2018 and remains current in New Zealand. Reconfirmation Notice 14/09/2018
Pages
ISBN
Committee	MT-008
Supersedes	DR 76048