ASTM F482-09
(Test Method)Standard Practice for Corrosion of Aircraft Metals by Total Immersion in Maintenance Chemicals
Standard Practice for Corrosion of Aircraft Metals by Total Immersion in Maintenance Chemicals
SIGNIFICANCE AND USE
This practice not only provides information on the accumulated effects of corrosion at specific time periods under a given set of conditions, but also provides information on the initial rate of corrosion of virgin metal, the corrosion rate of metal per unit time after long exposure, and the initial corrosion rate of virgin metal after long exposure of the corroding fluid to metal. The test also provides a means of determining the direction corrosion will take with time, although causes for increase or decrease in the corrosiveness and corrodibility of media and metal (such as passive film formation or destruction, depletion of corrosive contaminate, and so forth) as a function of time are not given.
SCOPE
1.1 This practice covers the determination of the corrosiveness of tank-type aircraft maintenance chemicals on aircraft metals and the corrodibility of metals in these maintenance chemicals with time. The determination is made under conditions of total immersion by a combination of weight change measurements and visual qualitative determinations of change.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. For specific precautions, see Section 6.
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Designation: F482 − 09
StandardPractice for
Corrosion of Aircraft Metals by Total Immersion in
1
Maintenance Chemicals
ThisstandardisissuedunderthefixeddesignationF482;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope a given set of conditions, but also provides information on the
initial rate of corrosion of virgin metal, the corrosion rate of
1.1 This practice covers the determination of the corrosive-
metal per unit time after long exposure, and the initial
ness of tank-type aircraft maintenance chemicals on aircraft
corrosion rate of virgin metal after long exposure of the
metals and the corrodibility of metals in these maintenance
corroding fluid to metal. The test also provides a means of
chemicals with time. The determination is made under condi-
determining the direction corrosion will take with time, al-
tions of total immersion by a combination of weight change
thoughcausesforincreaseordecreaseinthecorrosivenessand
measurementsandvisualqualitativedeterminationsofchange.
corrodibility of media and metal (such as passive film forma-
1.2 The values stated in SI units are to be regarded as the
tion or destruction, depletion of corrosive contaminate, and so
standard. The values given in parentheses are for information
forth) as a function of time are not given.
only.
4. Apparatus
1.3 This standard does not purport to address all of the
4.1 Wide-Mouth Glass Jar or Flask of suitable sizes (3000
safety concerns, if any, associated with its use. It is the
to 4000 mL), capable of accommodating a reflux condenser, a
responsibility of the user of this standard to establish appro-
thermometer, and a specimen support system. Fig. 1 shows a
priate safety and health practices and determine the applica-
typical arrangement, but any array meeting the provisions of
bility of regulatory limitations prior to use. For specific
4.2-4.5 is acceptable.
precautions, see Section 6.
4.1.1 If agitation is required, use an apparatus capable of
accepting a stirring mechanism, such as a magnetic stirrer or
2. Referenced Documents
2 impeller. Choose the glass jar or flask such that the specimens
2.1 ASTM Standards:
will remain fully immersed in a vertical position during the
D235Specification for Mineral Spirits (Petroleum Spirits)
test, and the ratio of area of immersed metal to volume of
(Hydrocarbon Dry Cleaning Solvent)
solution will be in accordance with 9.1.
D329Specification for Acetone
4.2 Specimen-Supporting Device—a glass or fluorocarbon
D1193Specification for Reagent Water
E1Specification for ASTM Liquid-in-Glass Thermometers plastic supporting system designed to keep the specimen fully
immersed while assuring free contact with the corroding
3. Significance and Use
solution,anddesignedtophysicallyisolatethespecimensfrom
each other.
3.1 This practice not only provides information on the
accumulated effects of corrosion at specific time periods under
4.3 Condenser—a glass reflux condenser of the water-
cooled type, having a condenser jacket 200 to 300 mm in
length.
1
This practice is under the jurisdiction ofASTM Committee F07 on Aerospace
and Aircraft and is the direct responsibility of Subcommittee F07.07 on Qualifica- 4.4 Constant-Temperature Device—Use any suitable regu-
tion Testing of Aircraft Cleaning Materials.
latedheatingdevice(mantle,hotplate,orbath)tomaintainthe
Current edition approved May 15, 2009. Published June 2009. Originally
solution at the required temperature.
published in 1977. Last previous edition approved in 2003 as F482–03. DOI:
10.1520/F0482-09.
4.5 Thermometer—an ASTM 75-mm (3-in.) immersion
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
thermometer having a range from −18 to 150°C (0 to 302°F)
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and conforming to requirements forThermometer 1F in accor-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. dance with Specification E1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F482 − 09
openflames.Avoidbreathingvaporsandprolongedorrepeated
contact with the skin. Use with adequate ventilation.
6.2 Flammable solvents, acids, or alkalis, or other toxic
compounds are occasionally found in the material used for
aircraft maintenance. Take suitable precautions to prevent
personnel injury.
7. Test Specimens
7.1 The test specimens of a given alloy shall be taken from
thesamesheetstockandshallmeasure50.8by25.4by1.6mm
(2 by 1 by 0.06 in.) with a 3.2-mm (0.125-in.)
...
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:F 482–03
Standard Test Method for Designation:F 482–09
Standard Practice for
Corrosion of Aircraft Metals by Total Immersion in
1
Maintenance Chemicals
This standard is issued under the fixed designation F 482; 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.
1. Scope
1.1 This test methodpractice covers the determination of the corrosiveness of tank-type aircraft maintenance chemicals on
aircraft metals and the corrodibility of metals in these maintenance chemicals with time. The determination is made under
conditions of total immersion by a combination of weight change measurements and visual qualitative determinations of change.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. For specific precautions, see Section 56.
2. Referenced Documents
2
2.1 ASTM Standards:
D235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
2
D329 Specification for Acetone
2
D740Specification for Methyl Ethyl Ketone Specification for Acetone
D1193 Specification for Reagent Water
E1 Specification for ASTM Liquid-in-Glass Thermometers
3. Significance and Use
3.1 This test methodpractice not only provides information on the accumulated effects of corrosion at specific time periods
under a given set of conditions, but also provides information on the initial rate of corrosion of virgin metal, the corrosion rate of
metal per unit time after long exposure, and the initial corrosion rate of virgin metal after long exposure of the corroding fluid to
metal. The test also provides a means of determining the direction corrosion will take with time, although causes for increase or
decrease in the corrosiveness and corrodibility of media and metal (such as passive film formation or destruction, depletion of
corrosive contaminate, and so forth) as a function of time are not given.
4. Apparatus
4.1 Wide-Mouth Glass Jar or Flask of suitable sizes (3000 to 4000 mL), capable of accommodating a reflux condenser, a
thermometer, and a specimen support system. Fig. 1 shows a typical arrangement, but any array meeting the provisions of 4.2-4.5
is acceptable.
4.1.1 Ifagitationisrequired,useanapparatuscapableofacceptingastirringmechanism,suchasamagneticstirrerorimpeller.
Choosetheglassjarorflasksuchthatthespecimenswillremainfullyimmersedinaverticalpositionduringthetest,andtheratio
of area of immersed metal to volume of solution will be in accordance with 8.19.1.
4.2 Specimen-Supporting Device —a glass or fluorocarbon plastic supporting system designed to keep the specimen fully
immersedwhileassuringfreecontactwiththecorrodingsolution,anddesignedtophysicallyisolatethespecimensfromeachother.
1
This test method practice is under the jurisdiction of ASTM Committee F07 on Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 on
Qualification Testing of Aircraft Cleaning Materials.
´1
Current edition approved Apr. 10, 2003. Published May 2003. Originally published in 1977. Last previous edition approved in 1999 as F482–84 (1999) .
Current edition approved May 15, 2009. Published June 2009. Originally published in 1977. Last previous edition approved in 2003 as F482–03.
2
Annual Book of ASTM Standards, Vol 06.04.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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F482–09
A = Condenser
B = Stirring mechanism
C = Containing vessel
D = Specimen holder
E = Thermometer
F = Metal specimen
G = Maintenance chemical solution
NOTE—THIS IS ONE FORM THAT THE EQUIPMENT CAN TAKE, AND IS NOT
MANDATORY.ANY ARRAY MEETING THE REQUIREMENTS OF 4.2-4.5 IS ACCEPTABLE.
FIG. 1 Test Apparatus
4.3 Condenser—a glass reflux condenser of the water-cool
...
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