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Abstract

Specifies the method for conducting a drop weight test for carbon steel, low alloy steel and similar materials up to 19 mm thickness.
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 the method for conducting a drop weight tear test for carbon steel, low alloy steel, and similar materials up to 19 mm thickness. In particular it is intended for line-pipe, or plate intended for line-pipe, 300 mm diameter or greater, and excludes the testing of weld metal. The test is identified as DWTT.

NOTE: Difficulty may be experienced in applying this test to material below 5 mm thickness.

This test may be used to determine the appearance of propagating fractures in plain carbon or low alloy pipe steels (yield stress less than 800 MPa) over the temperature range where the fracture mode changes from brittle (cleavage or flat) to ductile (shear or oblique).

NOTE: The test should be used for the following purposes:
a) For research and development, to study the effect of metallurgical variables such as composition or heat treatment, or of fabricating operations on the mode of fracture propagation.
b) For evaluation of materials for service, to indicate the suitability of materials for service applications by indicating fracture propagation behaviour at the service temperature(s).
c) For information or specification purposes, to provide a manufacturing quality control technique when suitable correlations have been established with service behaviour.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 31/03/2017. This standard has been reconfirmed in Australia in 2017 and remains current in New Zealand. Reconfirmation Notice 31/03/2017
Pages
ISBN
Committee	MT-006
Supersedes	AS 1330-1974 DR 04353