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ASTM F1110-09(2020)

(Test Method)

Standard Test Method for Sandwich Corrosion Test

Standard Test Method for Sandwich Corrosion Test

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 test material are compared. Disregard corrosion at cut edges of the test coupons.  
5.3 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.  
5.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements appear in Section 9.  
1.4 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
31-Oct-2020
ICS
49.025.99 - Other materials
Technical Committee
F07 - Aerospace and Aircraft
Drafting Committee
F07.07 - Qualification Testing of Aircraft Cleaning Materials
Current Stage
Ref Project

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ASTM F1110-09(2020) - Standard Test Method for Sandwich Corrosion Test
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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.
Designation: F1110 − 09 (Reapproved 2020)
Standard Test Method for
1
Sandwich Corrosion Test
This standard is issued under the fixed designation F1110; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 U.S. Department of Defense.
3
1. Scope 2.2 Industry Standards:
SAE-AMS-QQ-A-250/4Al Alloy 2024, Plate and Sheet
1.1 This test method defines the procedure for evaluating
SAE-AMS-QQ-A-250/5Al Alloy Alclad 2024, Plate and
thecorrosivityofaircraftmaintenancechemicals,whenpresent
Sheet
between faying surfaces (sandwich) of aluminum alloys com-
SAE-AMS-QQ-A-250/12Al Alloy 7075, Plate and Sheet
monlyusedforaircraftstructures.Thistestmethodisintended
SAE-AMS-QQ-A-250/13Al Alloy Alclad 7075, Plate and
to be used in the qualification and approval of compounds
Sheet
employed in aircraft maintenance operations.
4
2.3 Military Specification:
1.2 The values stated in SI units are to be regarded as the MIL-A-8625Anodic Coatings forAluminum andAlAlloys
standard. The values given in parentheses are for information.
3. Terminology
1.3 This standard may involve hazardous materials,
3.1 Definitions of Terms Specific to This Standard:
operations, and equipment. This standard does not purport to
3.1.1 sandwich corrosion test—a comparative accelerated
address all of the safety concerns, if any, associated with its
environmentaltestofthecorrosivityofliquidorsolidmaterials
use. It is the responsibility of the user of this standard to
present between faying surfaces of structural aluminum alloys
establish appropriate safety, health, and environmental prac-
commonly used in aerospace construction.
tices and determine the applicability of regulatory limitations
prior to use. Specific hazard statements appear in Section 9.
4. Summary of Test Method
1.4 This international standard was developed in accor-
4.1 Aluminum coupons having clad or anodized nonclad
dance with internationally recognized principles on standard-
surfaces are sandwiched together with a filter paper saturated
ization established in the Decision on Principles for the
with the test material between the coupons. The sandwiched
Development of International Standards, Guides and Recom-
coupons are cycled between warm ambient air and warm
mendations issued by the World Trade Organization Technical
humid air for 7 days. The coupons are then inspected to
Barriers to Trade (TBT) Committee.
determine whether corrosion more severe than that caused by
reagent water has occurred on the surfaces exposed to the test
2. Referenced Documents
material.This test method is used for solutions of dry granular
2
2.1 ASTM Standards: material or for liquid materials.
D1193Specification for Reagent Water
5. Significance and Use
D1748Test Method for Rust Protection by Metal Preserva-
tives in the Humidity Cabinet
5.1 The data generated by this test method shall be used to
G46Guide for Examination and Evaluation of Pitting Cor- determine whether aircraft structural aluminum alloys are
rosion 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
1
This test method is under the jurisdiction of ASTM Committee F07 on based on a comparison of the appearance of faying surfaces of
Aerospace andAircraft and is the direct responsibility of Subcommittee F07.07 on
three sets of coupons. One set of test coupons is exposed with
Qualification Testing of Aircraft Cleaning Materials.
reagent water only in the faying surfaces, to establish the
Current edition approved Nov. 1, 2020. Published December 2020. Originally
approved in 1986. Last previous edition approved in 2014 as F1110–09(2014).
DOI: 10.1520/F1110-09R20.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Society of Automotive Engineers (SAE), 400 Commonwealth
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Dr., Warrendale, PA 15096-0001.
4
Standards volume information, refer to the standard’s Document Summary page on Available from Department of Defense Single Stock Point (DODSSP); http://
the ASTM website. 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 − 09 (2020)
baseline(controls)againstwhichthepanelsexposedto
...

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1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The SI units are shown in brackets, except that when A480M is specified, Annex A3 shall apply for the dimensional tolerances and not the bracketed SI values in Annex A2. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4 This specification and the applicable material specifications are expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation [SI units], the material shall be furnished in inch-pound units.  
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.

  • Technical specification
    26 pages
    English language
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  • Technical specification
    26 pages
    English language
    sale 15% off