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ASTM F502-08(2013)

(Test Method)

Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces

Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces

ABSTRACT
This test method covers determination of the effects of cleaning solutions and chemical maintenance materials on painted aircraft surfaces. Materials used for testing shall be drawing pencils, fine sand paper, abrasive mats, acetone, MIL-PRF-85285 coating, MIL-PRF-23377 primer coating, chemical conversion materials, and distilled or deionized water. Plate and sheet specimens of aluminum alloy shall be examined under concentrated and diluted test solutions. Pencils preparation, panels preparations, testing, and hardness determination shall be done according to the indicated procedure.
SCOPE
1.1 This test method covers determination of the effects of cleaning solutions and liquid cleaner concentrates on painted aircraft surfaces (Note 1). Streaking, discoloration, and blistering may be determined visually. Softening is determined with a series of specially prepared pencils wherein determination of the softest pencil to rupture the paint film is made. Note 1—This test method is applicable to any paint film that is exposed to cleaning materials. MIL-PRF-85285 has been selected as a basic example. When other paint finishes are used, refer to the applicable material specification for panel preparation and system curing prior to testing.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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.

General Information

Status
Historical
Publication Date
30-Nov-2013
ICS
49.040 - Coatings and related processes used in aerospace industry
Technical Committee
F07 - Aerospace and Aircraft
Drafting Committee
F07.07 - Qualification Testing of Aircraft Cleaning Materials
Current Stage
Ref Project

Relations

Replaces
ASTM F502-08 - Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces
Effective Date
01-Dec-2013
Replaced By
ASTM F502-08(2019) - Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces
Effective Date
01-May-2019
Referred By
ASTM D6361/D6361M-98(2020) - Standard Guide for Selecting Cleaning Agents and Processes
Effective Date
01-Dec-2013

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ASTM F502-08(2013) - Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft SurfacesASTM F502-08(2013) - Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces
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ASTM F502-08(2013) - Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces
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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: F502 − 08 (Reapproved 2013)
Standard Test Method for
Effects of Cleaning and Chemical Maintenance Materials on
Painted Aircraft Surfaces
ThisstandardisissuedunderthefixeddesignationF502;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
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.
1. Scope MIL-PRF-23377 Primer Coatings: Epoxy, High Solids
MIL-DTL-81706 Chemical Conversion Materials for Coat-
1.1 This test method covers determination of the effects of
ing Aluminum and Aluminum Alloys
cleaning solutions and liquid cleaner concentrates on painted
2.3 Federal Standards:
aircraft surfaces (Note 1). Streaking, discoloration, and blister-
FED-STD-595 Colors Used in Government Procurement
ing may be determined visually. Softening is determined with
a series of specially prepared pencils wherein determination of
2.4 Industry Standards:
the softest pencil to rupture the paint film is made.
SAE-AMS-QQ-A-250/13 Aluminum Alloy Alclad 7075,
Plate and Sheet
NOTE1—Thistestmethodisapplicabletoanypaintfilmthatisexposed
to cleaning materials. MIL-PRF-85285 has been selected as a basic
3. Materials
example. When other paint finishes are used, refer to the applicable
material specification for panel preparation and system curing prior to
3.1 Drawing Pencils (Note 2)—6B, 5B, 4B, 3B, 2B, B, HB,
testing.
F, H, 2H, 4H, 5H, and 6H.
1.2 The values stated in inch-pound units are to be regarded
3.2 Fine Sand Paper, 180 to 320 grit.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only 3.3 Abrasive Mats, A-A-58054, aluminum oxide, fine or
and are not considered standard. very fine.
1.3 This standard does not purport to address all of the
3.4 Acetone, in accordance with Specification D329.
safety concerns, if any, associated with its use. It is the
3.5 MIL-PRF-85285 Coating, polyurethane, Aircraft and
responsibility of the user of this standard to establish appro-
Support Equipment, FED-STD-595 Color No. 17875, insignia
priate safety and health practices and determine the applica-
white.
bility of regulatory limitations prior to use.
3.6 MIL-PRF-23377 Primer Coating, epoxy polyamide,
2. Referenced Documents
chemical- and solvent-resistant.
2.1 ASTM Standards:
3.7 Chemical Conversion Materials, MIL-DTL-81706,
D329 Specification for Acetone
Class 1A, for coating aluminum and aluminum alloys.
D1193 Specification for Reagent Water
3.8 Distilled or Deionized Water, in accordance with Speci-
2.2 Military Standards:
fication D1193, Type IV.
MIL-PRF-85285 Coating: Polyurethane, Aircraft and Sup-
NOTE 2—All pencils in a set must be from one manufacturer (for
port Equipment
example, Venus, Eagle, and so forth).
A-A-58054 Abrasive Mats, Non-Woven Non-Metallic
4. Safety Precautions
This test method is under the jurisdiction of ASTM Committee F07 on
4.1 Allsafetyregulationsprescribedforsprayapplicationof
Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 on
Qualification Testing of Aircraft Cleaning Materials. polyurethanepaintsshallbestrictlyadheredtointheuseofthis
Current edition approved Dec. 1, 2013. Published December 2013. Originally
test method.
approved in 1977. Last previous edition approved in 2008 as F502 – 08. DOI:
10.1520/F0502-08R13. 4.2 The testing procedure shall be conducted in a well-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ventilated area.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Available from Department of Defense Single Stock Point (DODSSP) Web Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Server at http://dodssp.daps.dla.mil using ASSIST Quick Search. Dr., Warrendale, PA 15096-0001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F502 − 08 (2013)
5. Test Specimens min at room temperature. Apply the finish coat in three
applications of 0.4 to 0.
...

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SCOPE
1.1 This practice covers procedures for sampling surfaces to determine the presence of particulate contamination, 5 μm and larger. The practice consists of the application of a pressure-sensitive tape to the surface followed by the removal of particulate contamination with the removal of the tape. The tape with the adhering particles is then mounted on counting slides. Counting and measuring of particles is done by standard techniques.  
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1.4 This practice is for use on surfaces that are not damaged by the application of adhesive tape. The use of this practice on any surface of any material not previously tested, or for which the susceptibility to damage is unknown, is not recommended. In general, metals, metal plating, and oxide coatings will not be damaged. Application to painted, vapor deposited, and optical coatings should be evaluated before implementing this test.  
1.5 This practice provides three methods to evaluate tape lift tests, as follows:
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A—This method uses light transmitted through the tape and tape adhesive to detect particles that adhere to it.  
4 to 6  
B—This method uses light transmitted through the tape adhesive after bonding to a base microscope slide, dissolving the tape backing, and a cover slide. The particles are embedded in the adhesive, and air bubbles are eliminated with acrylic mounting media.  
7 to 9  
C—This method uses light reflected off the tape adhesive to detect particles that adhere to it.  
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1.6 Units—The values stated in SI units are to be regarded as standard. The values given in parenthes...

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3.1 The data generated by this test method shall be used to determine whether low embrittling zinc-nickel plated parts are liable to be corroded or damaged by application of the test material during routine maintenance operations.
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ASTM F1864-21(Test Method)
Standard Test Method for Dust Erosion Resistance of Optical and Infrared Transparent Materials and Coatings

SIGNIFICANCE AND USE
5.1 All materials on exterior aircraft surfaces are subject to abrasion from airborne particles of various sizes and shapes. Transparent materials are particularly vulnerable to abrasion, since their performance is based on their ability to transmit light with a minimal amount of scatter. Scratches, pitting, and coating removal and delamination as a result of abrasion may increase scatter, reduce transmission, and degrade the performance of transparent materials. Visually transparent materials are required for pilot and air crew enclosures, such as canopies, windshields, and viewpoints. Materials transparent in the IR region (8 to 12 μm) are required for tracking, targeting, and navigational instrumentation.  
5.2 This test method is intended to provide a calibrated and repeatable means of determining the relative abrasion resistance of materials and coatings for optical and IR transparent materials and coatings. The test parameters for this test method can be directly related to dust cloud densities and velocities to which transparent materials are exposed in the field.
SCOPE
1.1 This test method covers the resistance of transparent plastics and coatings used in aerospace windscreens, canopies, and viewports to surface erosion as a result of dust impingement. This test method simulates flight through a defined particle cloud environment by means of independent control of particle size, velocity, impact angle, mass loading, and test duration.  
1.2 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.  
1.3 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.

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