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Description of ASTM-G103 2011ASTM G103 - 97(2011)Standard Practice for Evaluating Stress-Corrosion Cracking Resistance of Low Copper 7XXX Series Al-Zn-Mg-Cu Alloys in Boiling 6% Sodium Chloride SolutionActive Standard ASTM G103 | Developed by Subcommittee: G01.06 Book of Standards Volume: 03.02 ASTM G103Significance and Use This practice is normally used for stress-corrosion screening for the development of Al-Zn-Mg-Cu alloys containing less than 0.26 % copper. Effects on stress-corrosion resistance due to variables such as composition, thermo-mechanical processing, other fabrication variables, and magnitude of applied stress may be compared. For a given mechanical method of stressing, the relative stress-corrosion resistance of the low copper Al-Zn-Mg-Cu alloys in atmospheric exposure correlates better with performance in boiling 6 % sodium chloride solution than with other accelerated testing media (7- 9 ) . In addition, this practice is relatively rapid. This practice is not applicable to 2XXX (Al-Cu), 5XXX (Al-Mg), 6XXX (Al-Mg-Si), and the 7XXX (Al-Zn-Mg-Cu) series alloys containing more than 1.2 % copper. 4.3.1 For 7XXX series alloys containing between 0.26 % and 1.2 % copper, there is no general agreement as to whether this practice or Practice G 44 correlates better with stress-corrosion resistance in service (5- 8 , 10) . 1. Scope 1.1 This practice primarily covers the test medium which may be used with a variety of test specimens and methods of applying stress. Exposure times, criteria of failure, and so on, are variable and not specified. 1.2 This stress-corrosion testing practice is intended for statically loaded smooth non-welded or welded specimens of 7XXX series Al-Zn-Mg-Cu alloys containing less than 0.26 % copper. This standard may involve hazardous materials, operations, and equipment. 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. See Section for additional precautions.
ASTM Standards B580 Specification for Anodic Oxide Coatings on Aluminum D1193 Specification for Reagent Water G30 Practice for Making and Using U-Bend Stress-Corrosion Test Specimens G38 Practice for Making and Using C-Ring Stress-Corrosion Test Specimens G39 Practice for Preparation and Use of Bent-Beam Stress-Corrosion Test Specimens G44 Practice for Exposure of Metals and Alloys by Alternate Immersion in Neutral 3.5 % Sodium Chloride Solution G49 Practice for Preparation and Use of Direct Tension Stress-Corrosion Test Specimens G58 Practice for Preparation of Stress-Corrosion Test Specimens for Weldments Keywords accelerated test environment; aluminum-zinc-magnesium-copper alloys; boiling sodium chloride solution; continuous immersion; ICS Code ICS Number Code 77.120.10 (Aluminium and aluminium alloys) DOI: 10.1520/G0103-97R11 ASTM International is a member of CrossRef. ASTM G103This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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