1、Designation:F111108b(Reapproved 2013)Standard Test Method forCorrosion of Low-Embrittling Cadmium Plate by AircraftMaintenance Chemicals1This standard is issued under the fixed designation F1111;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、 revision,the year of last revision.A number 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.Scope1.1 This test method
3、 is intended as a means of determiningthe corrosive effects of aircraft maintenance chemicals onlow-embrittling cadmium plating used on aircraft high-strengthsteel,under conditions of total immersion by quantitativemeasurements of weight change.1.2 This standard may involve hazardous materials,opera
4、tions,and equipment.This standard does not purport toaddress all of the safety concerns,if any,associated with itsuse.It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.For
5、specific hazard statements see Section 6,4.1.2.Referenced Documents2.1 ASTM Standards:2D329 Specification for AcetoneD1193 Specification for Reagent Water2.2 Industry Standards:SAE-AMS-6345 Steel Sheet,Strip and Plate(SAE 4130)Normalized or Otherwise Heat Treated32.3 Military Standards:MIL-STD-870 C
6、admium Plating,Low Embrittlement,Elec-trodeposition43.Significance and Use3.1 The data generated by this test method shall be used todetermine whether low embrittling cadmium plated parts areliable to be corroded or damaged by application of the testmaterial during routine maintenance operations.4.A
7、pparatus4.1 Wide Mouth Sealable Glass Jar or Stoppered Flask,having a capacity so chosen that specimens will remain fullyimmersed in a vertical position and not in contact with otherspecimens during the test and the ratio of area of immersedmetal to the volume of solution will be as prescribed in 9.
8、1.(WarningSome aircraft maintenance chemicals whenheated have high vapor pressures or may produce gases duringtesting.Suitable precautions should be taken to prevent thecontaining vessel from exploding or the vessel should be sochosen as to withstand the resulting pressures.)4.2 Constant Temperature
9、 DeviceAny suitable regulatedheating device may be employed for maintaining the solutionat the required temperature.4.3 Oven,capable of maintaining temperature of 110 6 2C(230 6 4F).5.Reagents5.1 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean reagent water a
10、s definedby Type III of Specification D1193.5.2 Methyl n-propyl ketone(MPK).5.3 Acetone,in accordance with Specification D329.6.Safety Precautions6.1 The solvents used in cleaning test specimens are flam-mable or harmful if inhaled,or both.Keep away from sparksand open flames.Avoid breathing vapors
11、and prolonged orrepeated contact with skin.Use adequate ventilation.6.2 Some materials used for aircraft maintenance maycontain flammable solvents,acids or alkalis,or other toxiccompounds.Take suitable precautions to prevent personalinjury.7.Test Specimens7.1 The test specimens shall be made of 4130
12、 steel Condi-tion N in accordance with SAE-AMS-6345,measuring 25.4 by1This test method is under the jurisdiction of ASTM Committee F07 onAerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 onQualification Testing of Aircraft Cleaning Materials.Current edition approved Dec.
13、1,2013.Published December 2013.Originallyapproved in 1988.Last previous edition approved in 2008 as F1111 08b.DOI:10.1520/F1111-08BR13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume informa
14、tion,refer to the standards Document Summary page onthe ASTM website.3Available from Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001.4Available from the Department of Defense Single Stock Point(DODSSP);webserver at http:/dodssp.daps.dla.milCopyright ASTM Internation
15、al,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 50.8 by 1.22 mm(1 by 2 by 0.048 in.)and cadmium plated inaccordance with MIL-STD-870,Type I,Class1.7.2 Three replicates should be tested in each concentrationof maintenance chemicals solution as prescribed in 9.2.8.P
16、recleaning Test Specimens8.1 Using a stiff bristle brush,brush off loose cadmiumplate.Be careful to brush only as hard as is required to removethe loose cadmium plate.Immerse the test specimens in abeaker of methyl npropyl ketone5and swab the surface of theindividual specimen thoroughly using clean forceps to hold thetest specimen and the cotton swab.8.2 Shake off excess solvent.Transfer and immerse the testspecimens separately several times in a beaker of methyln-propyl ketone.8.3 Shake off exc
