ASTM F1110-08

Standard Test Method for Sandwich Corrosion Test

SIGNIFICANCE AND USE
The data generated by this test method shall be used to determine whether aircraft structural aluminum alloys are liable to be corroded or damaged by application of the test material during routine maintenance operations.
Interpretation of the sandwich corrosion test results is based on a comparison of the appearance of faying surfaces of three sets of coupons. One set of test coupons is exposed with reagent water only in the faying surfaces, to establish the baseline (controls) against which the panels exposed to the test material are compared. Disregard corrosion at cut edges of the test coupons.
The relative corrosion severity rating system is provided in order to allow a numerical classification of the test results and to eliminate the necessity for elaborate weight loss measurements. Pitting corrosion, which is rated 4—extensive (severe) corrosion, may involve only a negligible weight loss.
Relative corrosion severity rating system:
Appearance/Corrosion: 0—No visible corrosion and no discoloration present 1—Very slight corrosion or very slight discoloration, and/or up to 5 % of areaA corroded 2—Discoloration and/or up to 10 % of areaA corroded 3—Discoloration and/or up to 25 % of areaA corroded 4—Discoloration and/or more than 25 % of areaA corroded, and/or pitting
present
A ”Area” refers to area under the filter paper, or if no filter paper is used, the area where the test material was applied.
SCOPE
1.1 This test method defines the procedure for evaluating the corrosivity of aircraft maintenance chemicals, when present between faying surfaces (sandwich) of aluminum alloys commonly used for aircraft structures. This test method is intended to be used in the qualification and approval of compounds employed in aircraft maintenance operations.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information.
1.3 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. Specific hazard statements appear in Section 9.

General Information

• Status: Historical
• Publication Date: 30-Apr-2008
• ICS: 49.025.99 - Other materials
• Technical Committee: F07 - Aerospace and Aircraft
• Drafting Committee: F07.07 - Qualification Testing of Aircraft Cleaning Materials

Relations

• Replaces: ASTM F1110-02 - Standard Test Method for Sandwich Corrosion Test
• Effective Date: 01-May-2008
• Replaced By: ASTM F1110-09 - Standard Test Method for Sandwich Corrosion Test
• Effective Date: 15-May-2009
• Referred By: ASTM C800-19 - Standard Specification for Fibrous Glass Blanket Insulation (Aircraft Type)
• Effective Date: 01-May-2008
• Referred By: ASTM D6361/D6361M-98(2020) - Standard Guide for Selecting Cleaning Agents and Processes
• Effective Date: 01-May-2008

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F1110–08
Standard Test Method for
1
Sandwich Corrosion Test
This standard is issued under the fixed designation F 1110; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2.3 Military Specification:
MIL-A-8625 Anodic Coatings for Aluminum and Al Al-
1.1 This test method defines the procedure for evaluating
4
loys
thecorrosivityofaircraftmaintenancechemicals,whenpresent
between faying surfaces (sandwich) of aluminum alloys com-
3. Terminology
monly used for aircraft structures. This test method is intended
3.1 Definition of Term Specific to This Standard:
to be used in the qualification and approval of compounds
3.1.1 sandwich corrosion test—a comparative accelerated
employed in aircraft maintenance operations.
environmentaltestofthecorrosivityofliquidorsolidmaterials
1.2 The values stated in SI units are to be regarded as the
present between faying surfaces of structural aluminum alloys
standard. The values given in parentheses are for information.
commonly used in aerospace construction.
1.3 This standard may involve hazardous materials, opera-
tions, and equipment. This standard does not purport to
4. Summary of Test Method
address all of the safety concerns, if any, associated with its
4.1 Aluminum coupons having clad or anodized nonclad
use. It is the responsibility of the user of this standard to
surfaces are sandwiched together with a filter paper saturated
establish appropriate safety and health practices and deter-
with the test material between the coupons. The sandwiched
mine the applicability of regulatory limitations prior to use.
coupons are cycled between warm ambient air and warm
Specific hazard statements appear in Section 9.
humid air for 7 days. The coupons are then inspected to
determine whether corrosion more severe than that caused by
2. Referenced Documents
2
reagent water has occurred on the surfaces exposed to the test
2.1 ASTM Standards:
material. This test method is used for solutions of dry granular
D 1193 Specification for Reagent Water
material or for liquid materials.
D 1748 Test Method for Rust Protection by Metal Preser-
vatives in the Humidity Cabinet
5. Significance and Use
G46 Guide for Examination and Evaluation of Pitting
5.1 The data generated by this test method shall be used to
Corrosion
3 determine whether aircraft structural aluminum alloys are
2.2 Industry Standards:
liable to be corroded or damaged by application of the test
SAE-AMS-QQ-A-250/4 Al Alloy 2024, Plate and Sheet
material during routine maintenance operations.
SAE-AMS-QQ-A-250/5 Al Alloy Alclad 2024, Plate and
5.2 Interpretation of the sandwich corrosion test results is
Sheet
based on a comparison of the appearance of faying surfaces of
SAE-AMS-QQ-A-250/12 Al Alloy 7075, Plate and Sheet
three sets of coupons. One set of test coupons is exposed with
SAE-AMS-QQ-A-250/13 Al Alloy Alclad 7075, Plate and
reagent water only in the faying surfaces, to establish the
Sheet
baseline (controls) against which the panels exposed to the test
material are compared. Disregard corrosion at cut edges of the
1
test coupons.
This test method is under the jurisdiction of ASTM Committee F07 on
Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 on
5.3 Therelativecorrosionseverityratingsystemisprovided
Qualification Testing of Aircraft Cleaning Materials.
in order to allow a numerical classification of the test results
Current edition approved May 1, 2008. Published June 2008. Originally
and to eliminate the necessity for elaborate weight loss
approved in 1986. Last previous edition approved in 2002 as F 1110 – 02.
2
measurements. Pitting corrosion, which is rated 4—extensive
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
(severe) corrosion, may involve only a negligible weight loss.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Available from Department of Defense Single Stock Point (DODSSP); http://
Dr., Warrendale, PA 15096-0001. dodssp.daps.dla.mil
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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F1110–08
5.4 Relative corrosion severity rating system: 9. Hazards
Appearance/Corrosion:
9.1 The materials used for aircraft maintenance sometimes
0—No visibl
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:F1110–02 Designation:F1110–08
Standard Test Method for
1
Sandwich Corrosion Test
This standard is issued under the fixed designation F 1110; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This test method defines the procedure for evaluating the corrosivity of aircraft maintenance chemicals, when present
between faying surfaces (sandwich) of aluminum alloys commonly used for aircraft structures. This test method is intended to be
used in the qualification and approval of compounds employed in aircraft maintenance operations.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information.
1.3 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.Specifichazardstatementsappear
in Section 9.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1193 Specification for Reagent Water
D 1748 Test Method for Rust Protection by Metal Preservatives in the Humidity Cabinet
G 46 Guide for Examination and Evaluation of Pitting Corrosion
3
2.2 Industry Standards:
SAE-AMS-QQ-A-250/4 Al Alloy 2024, Plate and Sheet
SAE-AMS-QQ-A-250/5 Al Alloy Alclad 2024, Plate and Sheet
SAE-AMS-QQ-A-250/12 Al Alloy 7075, Plate and Sheet
SAE-AMS-QQ-A-250/13 Al Alloy Alclad 7075, Plate and Sheet
2.3 Military Specification:
4
MIL-A-8625 Anodic Coatings for Aluminum and Al Alloys
3. Terminology
3.1 Definition of Term Specific to This Standard:
3.1.1 sandwich corrosion test—a comparative accelerated environmental test of the corrosivity of liquid or solid materials
present between faying surfaces of structural aluminum alloys commonly used in aerospace construction.
4. Summary of Test Method
4.1 Aluminum coupons having clad or anodized nonclad surfaces are sandwiched together with a filter paper saturated with the
test material between the coupons.The sandwiched coupons are cycled between warm ambient air and warm humid air for 7 days.
The coupons are then inspected to determine whether corrosion more severe than that caused by reagent water has occurred on
the surfaces exposed to the test material. This test method is used for solutions of dry granular material or for liquid materials.
1
This test method is under the jurisdiction ofASTM Committee F07 onAerospace andAircraft and is the direct responsibility of Subcommittee F07.07 on Qualification
Testing of Aircraft Cleaning Materials.
Current edition approved Aug. 10, 2002. Published September 2002. Originally published as F1110–86. Last previous edition F1110–90(1998).
Current edition approved May 1, 2008. Published June 2008. Originally approved in 1986. Last previous edition approved in 2002 as F 1110 – 02.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
, Vol 11.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 05.01.
3
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001.
4
Annual Book of ASTM Standards, Vol 03.02.
4
Available from Department of Defense Single Stock Point (DODSSP); http://dodssp.daps.dla.mil
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F1110–08
5. Significance and Use
5.1 The data generated by this test method shall be used to determine whether aircraft structural aluminum alloys are liable to
be corroded or damaged by application of the test material during routine maintenance operations.
5.2 Interpretation of the sandwich corrosion test results is based on a comparison of the appearance of faying surfaces of three
sets of coupons. One set of test coupons is exposed with reagent water only in the faying surfaces, to establish the baseline
(controls) against which the panels exposed to the
...