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ASTM G2/G2M-06

ASTM G2/G2M-06

Standard Test Method for Corrosion Testing of Products of Zirconium, Hafnium, and Their Alloys in Water at 680°F [360°C]or in Steam at 750°F [400°C]

2017-08-16 /Historical
Superseeded by:
Significance and Use:

This test method is primarily used as an acceptance test for products of zirconium, hafnium, and their alloys. This standard has been widely used in the development of new alloys, heat treating practices, and for evaluation of welding techniques.

Specimens are normally tested after careful etching and rinsing. Specimens with as-manufactured surfaces may also be tested without further surface removal.

When tubing with a second material clad on the inner surface is to be tested, the inner cladding shall be removed prior to the test.


1.1 This test method covers (1) the determination of mass gain, and (2) the surface inspection of products of zirconium, hafnium, and their alloys when corrosion tested in water at 680°F or in steam at 750°F.

1.2 This test method is to be utilized in its entirety to the extent specified herein as a product acceptance test.

1.3 This test method may be used on wrought products, castings, powder metallurgy products, and weld metals.

1.4 A complete metric companion to this test method has been developed, Test Method G 2M. Therefore, no metric equivalents are shown. However, since the mass gain and surface area of the specimen and the electrical resistivity of water are always measured or calculated in SI units, these are given in SI units.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9.

mass gain; steam corrosion; water corrosion
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