ASTM G71-81(2019)

Standard Guide for Conducting and Evaluating Galvanic Corrosion Tests in Electrolytes

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STANDARD published on 1.5.2019

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The information about the standard:

Designation standards: ASTM G71-81(2019)
Note: WITHDRAWN
Publication date standards: 1.5.2019
SKU: NS-951271
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Corrosion of metals

Annotation of standard text ASTM G71-81(2019) :

Keywords:

corrosion, dissimilar metals, galvanic corrosion, galvanic couple, zero resistance ammeter,, ICS Number Code 77.060 (Corrosion of metals)

Additional information

Significance and Use

3.1 Use of this guide is intended to provide information on the galvanic corrosion of metals in electrical contact in an electrolyte that does not have a flow velocity sufficient to cause erosion-corrosion or cavitation.

3.2 This standard is presented as a guide for conducting galvanic corrosion tests in liquid electrolyte solutions, both in the laboratory and in service environments. Adherence to this guide will aid in avoiding some of the inherent difficulties in such testing.

1. Scope

1.1 This guide covers conducting and evaluating galvanic corrosion tests to characterize the behavior of two dissimilar metals in electrical contact in an electrolyte under low-flow conditions. It can be adapted to wrought or cast metals and alloys.

1.2 This guide covers the selection of materials, specimen preparation, test environment, method of exposure, and method for evaluating the results to characterize the behavior of galvanic couples in an electrolyte.

Note 1: Additional information on galvanic corrosion testing and examples of the conduct and evaluation of galvanic corrosion tests in electrolytes are given in Refs (1)2 through 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

G31-21	Standard Guide for Laboratory Immersion Corrosion Testing of Metals
G46-21	Standard Guide for Examination and Evaluation of Pitting Corrosion
G16-13(2019)	Standard Guide for Applying Statistics to Analysis of Corrosion Data
G4-01	Standard Guide for Conducting Corrosion Tests in Field Applications
G3-14(2019)	Standard Practice for Conventions Applicable to Electrochemical Measurements in Corrosion Testing
G1-03(2017)e1	Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens (Includes all amendments and changes 12/8/2017).

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