Standard Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution

SIGNIFICANCE AND USE
4.1 This practice is especially useful for evaluating the adequacy of quenching when performed on material in the as-quenched condition. The practice may also be used to study the effect of subsequent thermal processes (for example, paint or bonding cures) or of actual precipitation treatments on the inherent type of corrosion. Intergranular corrosion resistance of heat treatable aluminum alloys is often directly related to the quenching conditions applied after solution heat treatment and to the subsequent aging treatment.4  
4.2 This practice is not well suited for non-heat treatable work hardening aluminum alloys, such as the 1XXX, 3XXX, and 5XXX series (see Test Method G67).  
4.3 This practice does not deal with the interpretation of resulting intergranular corrosion. The significance of the extent and depth of any intergranular corrosion resulting from this test is to be agreed upon between producer and user.
SCOPE
1.1 This practice covers the procedures for immersion tests in sodium chloride + hydrogen peroxide solution. It is primarily for tests of wrought heat treatable aluminum alloys (2XXX and 7XXX) but may be used for other aluminum alloys, including castings. It sets forth the specimen preparation procedures and the environmental conditions of the test and the means for controlling them.  
1.2 This practice is intended for evaluations during alloy development and for evaluating production where it may serve as a control test on the quality of successive lots of the same material (see MIL-H-6088 and U.S. Federal Test Method Std. 151b). Therefore strict test conditions are stipulated for maximum assurance that variations in results are attributable to lot-to-lot differences in the material being tested.
Note 1: This practice does not address sampling or interpretation or significance of results.  
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.

General Information

Status
Published
Publication Date
30-Nov-2022
Technical Committee
G01 - Corrosion of Metals

Relations

Effective Date
15-Jan-2024
Effective Date
01-Nov-2023
Effective Date
01-May-2020
Effective Date
01-Oct-2018
Effective Date
01-Jun-2015
Effective Date
01-May-2013
Effective Date
01-May-2012
Effective Date
01-Dec-2011
Effective Date
01-May-2009
Effective Date
01-Jul-2007
Effective Date
01-Jul-2007
Effective Date
01-May-2007
Effective Date
01-Mar-2006
Effective Date
01-May-2004
Effective Date
01-Oct-2003

Overview

ASTM G110-92(2022)e2, titled "Standard Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution," is an internationally recognized ASTM standard. It provides specific procedures for immersion tests designed to assess the intergranular corrosion resistance of heat treatable aluminum alloys, particularly those in the 2XXX and 7XXX series. This standard is widely used in alloy development, quality control, and production evaluation, offering valuable guidance for ensuring material performance and reliability in demanding applications.

Key Topics

  • Evaluation of Intergranular Corrosion Resistance: Focuses on testing wrought heat treatable aluminum alloys such as 2XXX and 7XXX series by subjecting specimens to sodium chloride and hydrogen peroxide immersion.
  • Specimen Preparation: Outlines detailed methods for marking, cleaning, and preparing samples to remove any cladding or organic contaminants prior to testing.
  • Test Procedures: Specifies the immersion conditions, including solution composition, temperature, exposure duration, and post-exposure examination steps to detect and assess corrosion.
  • Quality Control: Stipulates strict testing conditions to ensure that observed variations in results are due to material differences rather than inconsistencies in test execution.
  • Limitations: Notes that this method is not suitable for evaluating non-heat treatable, work-hardened aluminum alloys (such as 1XXX, 3XXX, and 5XXX series) and does not address sample interpretation.

Applications

The ASTM G110 standard finds practical application in several critical areas:

  • Alloy Development: Used to evaluate intergranular corrosion resistance during the development of new aluminum alloys or alloy modifications.
  • Production Quality Control: Serves as a reference check on material lots to ensure consistent corrosion resistance performance, supporting compliance with military and federal specifications (e.g., MIL-H-6088, U.S. Federal Test Method Std. 151b).
  • Heat Treatment Verification: Assesses the effectiveness of quenching and subsequent thermal process treatments, including paint and bonding cures, on the corrosion properties of aluminum alloys.
  • Industrial Sectors: Industrial users, such as aerospace, automotive, and manufacturing sectors, rely on this standard to verify material durability and meet stringent safety and reliability requirements.
  • Material Certification: Provides a standardized approach for third-party laboratories and material suppliers to validate the corrosion resistance property of products submitted to customers.

Related Standards

Several related documents support or complement the use of ASTM G110:

  • ASTM G67: Test Method for Determining Susceptibility to Intergranular Corrosion of 5XXX Series Aluminum Alloys by Mass Loss After Exposure to Nitric Acid.
  • ASTM G1: Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens.
  • ASTM E3: Guide for Preparation of Metallographic Specimens.
  • ASTM E407: Practice for Microetching Metals and Alloys.
  • ASTM G69: Test Method for Measurement of Corrosion Potentials of Aluminum Alloys.
  • ASTM G193: Terminology and Acronyms Relating to Corrosion.
  • MIL-H-6088: U.S. Military Specification for Heat Treatment of Aluminum Alloys.
  • U.S. Federal Test Method Std. 151b: Intergranular Corrosion Test for Aluminum Alloys.

By adhering to ASTM G110 procedures, material producers and users gain confidence in the durability and integrity of heat treatable aluminum alloys, supporting safer and more reliable component performance in service.

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ASTM G110-92(2022)e2 - Standard Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution

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Frequently Asked Questions

ASTM G110-92(2022)e2 is a standard published by ASTM International. Its full title is "Standard Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution". This standard covers: SIGNIFICANCE AND USE 4.1 This practice is especially useful for evaluating the adequacy of quenching when performed on material in the as-quenched condition. The practice may also be used to study the effect of subsequent thermal processes (for example, paint or bonding cures) or of actual precipitation treatments on the inherent type of corrosion. Intergranular corrosion resistance of heat treatable aluminum alloys is often directly related to the quenching conditions applied after solution heat treatment and to the subsequent aging treatment.4 4.2 This practice is not well suited for non-heat treatable work hardening aluminum alloys, such as the 1XXX, 3XXX, and 5XXX series (see Test Method G67). 4.3 This practice does not deal with the interpretation of resulting intergranular corrosion. The significance of the extent and depth of any intergranular corrosion resulting from this test is to be agreed upon between producer and user. SCOPE 1.1 This practice covers the procedures for immersion tests in sodium chloride + hydrogen peroxide solution. It is primarily for tests of wrought heat treatable aluminum alloys (2XXX and 7XXX) but may be used for other aluminum alloys, including castings. It sets forth the specimen preparation procedures and the environmental conditions of the test and the means for controlling them. 1.2 This practice is intended for evaluations during alloy development and for evaluating production where it may serve as a control test on the quality of successive lots of the same material (see MIL-H-6088 and U.S. Federal Test Method Std. 151b). Therefore strict test conditions are stipulated for maximum assurance that variations in results are attributable to lot-to-lot differences in the material being tested. Note 1: This practice does not address sampling or interpretation or significance of results. 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.

SIGNIFICANCE AND USE 4.1 This practice is especially useful for evaluating the adequacy of quenching when performed on material in the as-quenched condition. The practice may also be used to study the effect of subsequent thermal processes (for example, paint or bonding cures) or of actual precipitation treatments on the inherent type of corrosion. Intergranular corrosion resistance of heat treatable aluminum alloys is often directly related to the quenching conditions applied after solution heat treatment and to the subsequent aging treatment.4 4.2 This practice is not well suited for non-heat treatable work hardening aluminum alloys, such as the 1XXX, 3XXX, and 5XXX series (see Test Method G67). 4.3 This practice does not deal with the interpretation of resulting intergranular corrosion. The significance of the extent and depth of any intergranular corrosion resulting from this test is to be agreed upon between producer and user. SCOPE 1.1 This practice covers the procedures for immersion tests in sodium chloride + hydrogen peroxide solution. It is primarily for tests of wrought heat treatable aluminum alloys (2XXX and 7XXX) but may be used for other aluminum alloys, including castings. It sets forth the specimen preparation procedures and the environmental conditions of the test and the means for controlling them. 1.2 This practice is intended for evaluations during alloy development and for evaluating production where it may serve as a control test on the quality of successive lots of the same material (see MIL-H-6088 and U.S. Federal Test Method Std. 151b). Therefore strict test conditions are stipulated for maximum assurance that variations in results are attributable to lot-to-lot differences in the material being tested. Note 1: This practice does not address sampling or interpretation or significance of results. 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.

ASTM G110-92(2022)e2 is classified under the following ICS (International Classification for Standards) categories: 77.120.10 - Aluminium and aluminium alloys. The ICS classification helps identify the subject area and facilitates finding related standards.

ASTM G110-92(2022)e2 has the following relationships with other standards: It is inter standard links to ASTM G67-24, ASTM E407-23, ASTM G69-20, ASTM G67-18, ASTM E407-07(2015)e1, ASTM G67-13, ASTM G69-12, ASTM G1-03(2011), ASTM G69-97(2009), ASTM E3-01(2007)e1, ASTM E3-01(2007), ASTM E407-07, ASTM D1193-06, ASTM G67-04, ASTM G1-03. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ASTM G110-92(2022)e2 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


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
Designation: G110 − 92 (Reapproved 2022)
Standard Practice for
Evaluating Intergranular Corrosion Resistance of Heat
Treatable Aluminum Alloys by Immersion in Sodium
Chloride + Hydrogen Peroxide Solution
This standard is issued under the fixed designation G110; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Replaced Terminology G15 with Terminology G193, and other editorial changes made throughout in Dec. 2022.
2 1
ε NOTE—Footnote 1 and the ɛ NOTE were corrected editorially in January 2023.
1. Scope 2. Referenced Documents
1.1 This practice covers the procedures for immersion tests 2.1 ASTM Standards:
in sodium chloride + hydrogen peroxide solution. It is primar- D1193 Specification for Reagent Water
ily for tests of wrought heat treatable aluminum alloys (2XXX E3 Guide for Preparation of Metallographic Specimens
and 7XXX) but may be used for other aluminum alloys, E407 Practice for Microetching Metals and Alloys
including castings. It sets forth the specimen preparation G1 Practice for Preparing, Cleaning, and Evaluating Corro-
proceduresandtheenvironmentalconditionsofthetestandthe sion Test Specimens
means for controlling them. G67 Test Method for Determining the Susceptibility to
Intergranular Corrosion of 5XXX Series Aluminum Al-
1.2 This practice is intended for evaluations during alloy
loysbyMassLossAfterExposuretoNitricAcid(NAMLT
development and for evaluating production where it may serve
Test)
as a control test on the quality of successive lots of the same
G69 Test Method for Measurement of Corrosion Potentials
material (see MIL-H-6088 and U.S. Federal Test Method Std.
of Aluminum Alloys
151b). Therefore strict test conditions are stipulated for maxi-
G193 Terminology and Acronyms Relating to Corrosion
mum assurance that variations in results are attributable to
2.2 Other Documents:
lot-to-lot differences in the material being tested.
U.S. Military Specification MIL-H-6088 Heat Treatment of
NOTE 1—This practice does not address sampling or interpretation or
Aluminum Alloys
significance of results.
U.S. Federal Test Method, Std. No. 151b Method 822.1,
1.3 The values stated in SI units are to be regarded as
Intergranular Corrosion Test for Aluminum Alloys
standard. No other units of measurement are included in this
3. Summary of Practice
standard.
1.4 This standard does not purport to address all of the
3.1 This practice consists of immersing etched test speci-
safety concerns, if any, associated with its use. It is the mens in a sodium chloride + hydrogen peroxide solution for 6
responsibility of the user of this standard to establish appro-
or more hours. After immersion, metallographic sections are
priate safety, health, and environmental practices and deter- examined to determine the extent of intergranular corrosion
mine the applicability of regulatory limitations prior to use. (see Terminology G193).
1.5 This international standard was developed in accor-
4. Significance and Use
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 This practice is especially useful for evaluating the
Development of International Standards, Guides and Recom-
adequacy of quenching when performed on material in the
mendations issued by the World Trade Organization Technical
as-quenched condition. The practice may also be used to study
Barriers to Trade (TBT) Committee.
the effect of subsequent thermal processes (for example, paint
1 2
This practice is under the jurisdiction of ASTM Committee G01 on Corrosion For referenced ASTM standards, visit the ASTM website, www.astm.org, or
of Metals and is the direct responsibility of Subcommittee G01.05 on Laboratory contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Corrosion Tests. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2022. Published January 2023. Originally the ASTM website.
approved in 1992. Last previous edition approved in 2015 as G110–92 (2015). DOI: Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
10.1520/G0110-92R22E02. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´2
G110 − 92 (2022)
or bonding cures) or of actual precipitation treatments on the 7.3 Claddings (especially alcladding) shall be removed
inherenttypeofcorrosion.Intergranularcorrosionresistanceof either mechanically or chemically to a depth of at least twice
heat treatable aluminum alloys is often directly related to the the nominal cladding thickness. Chemical removal can be
quenching conditions applied after solution heat treatment and accomplished by immersion in a 5 % sodium hydroxide
to the subsequent aging treatment. solution at 140 °F followed by immersion for 1 min in
concentrated nitric acid. Examine typical specimen cross
4.2 This practice is not well suited for non-heat treatable
sections to be certain that cladding has been removed.
work hardening aluminum alloys, such as the 1XXX, 3XXX,
7.4 Organic materials, such as coatings, soil, oils, and other
and 5XXX series (see Test Method G67).
residues, should be removed with organic solvents, for
4.3 This practice does not deal with the interpretation of
example, acetone (see Practice G1).
resulting intergranular corrosion.The significance of the extent
7.5 Prior to immersion in the test solution, immerse each
anddepthofanyintergranularcorrosionresultingfromthistest
specimen for 1 min in the etching cleaner (see 6.1)at93°C.
is to be agreed upon between producer and user.
Rinse in reagent water. Immerse in concentrated nitri
...

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