ASTM G97-97(2013)
Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground Applications

Standard No.

ASTM G97-97(2013)

Release Date

1997

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM G97-18

Latest

ASTM G97-18(2022)

Scope

4.1 This test is a guide for evaluating magnesium anodes. The degree of correlation between this test and service performance has not been fully determined.

1.1 This test method covers a laboratory procedure that measures the two fundamental performance properties of magnesium sacrificial anode test specimens operating in a saturated calcium sulfate, saturated magnesium hydroxide environment. The two fundamental properties are electrode (oxidation potential) and ampere hours (Ah) obtained per unit mass of specimen consumed. Magnesium anodes installed underground are usually surrounded by a backfill material that typically consists of 758201;% gypsum (CaSO₄·2H ₂O), 208201;% bentonite clay, and 58201;% sodium sulfate (Na ₂SO₄). The calcium sulfate, magnesium hydroxide test electrolyte simulates the long term environment around an anode installed in the gypsum-bentonite-sodium sulfate backfill.

1.2 This test method is intended to be used for quality assurance by anode manufacturers or anode users. However, long term field performance properties may not be identical to property measurements obtained using this laboratory test.

Note 1—Refer to Terminology G15 for terms used in this test method.

1.3 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 precautions, See Section 7 and Paragraph 8.1.1.

ASTM G97-97(2013) Referenced Document

• ASTM D1193 Standard Specification for Reagent Water*， 1999-04-20 Update
• ASTM G15 Standard Terminology Relating to Corrosion and Corrosion Testing*， 1999-04-20 Update
• ASTM G16 Standard Guide for Applying Statistics to Analysis of Corrosion Data
• ASTM G3 Standard Practice for Conventions Applicable to Electrochemical Measurements in Corrosion Testing

ASTM G97-97(2013) history

• 2022 ASTM G97-18(2022) Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground Applications
• 2018 ASTM G97-18 Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground Applications
• 1997 ASTM G97-97(2013) Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground Applications
• 1997 ASTM G97-97(2007) Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground Applications
• 1997 ASTM G97-97(2002)e1 Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground Applications
• 1997 ASTM G97-97 Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Underground Applications