ASTM F502-93(1998)e1

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

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-C-81773(AS) 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  This standard does not purport to address all of the safety problems, 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: 31-Dec-1997
• 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

Relations

• Replaced By: ASTM F502-02 - Standard Test Method for Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces
• Effective Date: 10-Aug-2002

Standards Content (Sample)

Standard Test Method for
Effects of Cleaning and Chemical Maintenance Materials on
Painted Aircraft Surfaces'
This standard is issued under the fixed designation F 502; the number immediately following the designation indicates the year of
onginal 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 (c) indicates an editorial change since the last revision or reapproval.
This test method has been approved for use by agencies of the Deparlmenl of Defense. Consuii the DoD index of SpeciJìcaiions and
Siandards for ihe speciJic year of issue which has been adopted by rhe Depariinent of Defense.
fI NOTE-Incorrect Fig. I was editorially changed to the correct figure.
1. Scope 3. Materials
Drawing Pencils (Note 2)-6B, 5B, 4B, 3B, 2B, B, HB,
1.1 This test method covers determination of the effects of 3.1
F, H, 2H, 4H, 5H, and 6H.
cleaning solutions and liquid cleaner concentrates on painted
3.2 Fine Sand Paper, 180 to 320 grit.
aircraft surfaces (Note 1). Streaking, discoloration, and
3.3 Abrasive Mats, MIL-A-9962, aluminum oxide, fine or
blistering may be determined visually. Softening is deter-
very fine.
mined with a senes of specially prepared pencils wherein
3.4 Acetone.
determination of the softest pencil to rupture the paint film
3.5 MIL-C-81773(AS) Coating, polyurethane, aliphatic,
is made.
weather-resistant, Fed. Std. No. 595 Color No. 17875,
NOTE 1-This test method is applicable to any paint film that is
insignia white.
exposed to cleaning materials. MIL-C-8 1773(AS) has been selected as a
3.6 MIL-P-23377 Primer Coating, epoxy polyamide,
basic example. When other paint finishes are used, refer to the
chemical- and solvent-resistant.
applicable material specification for panel preparation and system
3.7 Chemical Conversion Materials, MIL-C-8 1706, Class
curing prior to testing.
lA, for coating aluminum and aluminum alloys.
3.8 Distilled or Deionized Water conforming to Specifica-
1.2 This standard does not purport to address all of the
tion D 1193, Type IV.
suf2t.v c«ncerns, If any, associated with its use. It is the
responsibilily qf'thc tiser of'this standard LO establish appro-
NOTE 2-All pencils in a set must be from one manufacturer (for
example, Venus, Eagle, etc.).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
4. Test Specimens
4.1 QQ-A-250113 Aluminum Alloy Plate and Sheet,
2. Referenced Documents
Alclad 7075-T6.
2.1 ASTM Standard:
5. Test Solutions
D 1193 Specification for Reagent Water'
5.1 Concentrated (as received, if a liquid).
Military standard^:^
2.2
5.2 In use dilution, if dilutent is water, see 3.8
MIL-C-8 1773 (AS) Coating, Polyurethane, Aliphatic,
.-
Weather Resistant
6. Safety Precautions
MIL-A-9962 Abrasive Mats, Non-Woven Non-Metallic
MIL-P-23377 Primer Coating, Epoxy, Polyamide, Chem- 6.1 All safety regulations prescribed for spray application
ical and Solvent Resistant of polyurethane paints shall be strictly adhered to in the use
MIL-C-8 1706 Chemical Conversion Materials for Coating of this test method.
Aluminum and Aluminum Alloys 6.2 The testing procedure shall be conducted in a well-
2.3 Federal standard^:^ ventilated area.
595 Color (Requirements for Individual Color Chips)
7. Procedure
QQ-A-250/ 13 Aluminum-Alloy Alclad 7075, Plate and
Sheet
7.1 Preparation of Pencils-Prepare a set of drawing
pencils for testing the painted panels by stripping the wood
away from the end approximately '/B in. without damaging
I This test method is under the jurisdiction of ASTM Committee F-7 on
the lead (as shown in Fig. 1). Then square the tip of the lead
Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 on
by holding the pencil in a vertical position and moving the
Qualification Testing of Aircraft Cleaning Materials.
Current edition approved Jan. 15, 1993. Published April 1993. Orig
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