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ASTM G2/G2M-06(2011)
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<
8 стр.
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Разработчик:
Зарубежные/ASTM
ICS:
77.120.99 Other non-ferrous metals and their alloys / Цветные металлы и их сплавы прочие77.060 Corrosion of metals / Коррозия металлов
Сборник (ASTM):
02.04 Nonferrous Metals – Nickel, Titanium, Lead, Tin, Zinc, Zirconium, Precious, Reactive, Refractory Metals and Alloys: Materials for Thermostats, Electrical Heating and Resistance Contact, and Connectors / Цветные металлы - Никель, Кобальт, Свинец, Олово, Цинк, Кадмий, Драгоценные металлы, химически активные металлы, Тугоплавкие металлы и сплавы, Материалы для Термостатов, Электронагревательных приборов, Контактов, Соединительные устройств
Тематика:
Other Nonferrous Metals
Описание
Значение и использование

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.

Область применения

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 [360°C] or in steam at 750°F [400°C].

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 Unless a single unit is used, for example corrosion mass gain in mg/dm2, the values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore each system must be used independently of the other. SI values cannot be mixed with inch-pound values.

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.

Ключевые слова:
mass gain; steam corrosion; water corrosion: Aqueous corrosion testing; Corrosion--nuclear applications; Corrosivity--water; Hafnium; Nuclear applications/materials--zirconium/zirconium alloys; Steam; UNS R60001 (Zr/Zr alloy for nuclear applications); UNS R60702 (Zr/Zr alloy for nonnuclear applications); UNS R60703 (Zr/Zr alloy for nonnuclear applications); UNS R60704 (Zr/Zr alloy for nonnuclear applications); UNS R60705 (Zr/Zr alloy for nonnuclear applications); UNS R60802 (Zr/Zr alloy for nuclear applications); UNS R60804 (Zr/Zr alloy for nuclear applications); UNS R60901 (Zr/Zr alloy for nuclear applications); Water corrosivity; Zirconium/zirconium alloys--nonnuclear applications; Zirconium alloys (for nuclear applications)--specifications