1、Designation:D174810(Reapproved 2015)Standard Test Method forRust Protection by Metal Preservatives in the HumidityCabinet1This standard is issued under the fixed designation D1748;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the y
2、ear 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 covers the eva
3、luation of the rust-preventive properties of metal preservatives under conditionsof high humidity.1.2 The values stated in SI units are to be regarded as thestandard except where the test apparatus or consumable partsare only available in other units.In such cases these will beregarded as standard.T
4、he values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to consult andestablish appropriate safety and health practices and deter-mine the applic
5、ability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A109/A109M Specification for Steel,Strip,Carbon(0.25Maximum Percent),Cold-RolledD512 Test Methods for Chloride Ion In WaterD516 Test Method for Sulfate Ion in WaterE11 Specification for Woven Wire Test Sieve Clo
6、th and TestSievesE323 Specification for Perforated-Plate Sieves for TestingPurposes2.2 Federal Standards:3QQ-S-698 Steel Sheet and Strip,Low Carbon2.3 Military Standards:4MIL-C-5646F Cloth,AirplaneMIL-C-15074E Corrosive Preventive Compound FingerPrint Remover2.4 Society of Automotive Engineers:5SAE
7、1009C Tee Reducer,Bulkhead on Side,Flareless Tube3.Summary of Test Method3.1 Steel panels are prepared to a prescribed surface finish,dipped in the test oil,allowed to drain,and then suspended ina humidity cabinet at 48.9 C(120 F)for a specified numberof hours.The oil fails or passes the test in acc
8、ordance with thesize and number of rust dots on the test surfaces of the panels.4.Significance and Use4.1 This test method is used for measuring the relativeabilities of metal preservatives to prevent the rusting of steelpanels under conditions of high humidity.It should not berelied upon to predict
9、 the effectiveness of a metal preservativein which high humidity is not the principal factor in the rusting.4.2 Comparisons made by this test method should normallybe limited to similar metal preservative combinations designedfor similar applications.The test life required for each type ofmetal pres
10、ervative and for each intended application should bebased on actual experience with that type of preservative in theintended service.4.3 Since the precision of the test method appears to be lessthan desired,a number of repeat tests may be necessary toestablish the test life of a given metal preserva
11、tive,and repeattests by this test method in more than one cabinet aresometimes desirable.4.4 The data obtained from this accelerated test is of interestonly in eliminating the most unsuitable materials or forindicating a probable relative order of protection against rustunder conditions of high humi
12、dity.This test method does not1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.L0.03 on Corrosion Testing of Sheet Metal Processing Fluids.Current edition approved July 1,2015.Publis
13、hed July 2015.Originally approvedin 1960.Last previous edition approved in 2010 as D1748 10.DOI:10.1520/D1748-10R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the s
14、tandards Document Summary page onthe ASTM website.3Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.4Available from Standardization Documents Order Desk,Bldg.4,Section D,700 Robbins Ave.,Philadel
15、phia,PA 19111-5094,Attn:NPODS.5Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096,http:/www.sae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 prescribe the exposure periods to be used for a specific produ
16、ct,nor the interpretation to be given to the results.5.Apparatus5.1 The apparatus shall conform to the details shown in theAnnex A1.6.Panel Cleaning Materials6.1 Aluminum Oxide Cloth,240 grit.NOTE1Paper-backed abrasives,wet or dry,waterproof,or iron oxideabrasives are prohibited.6.2 Silica Sand,white,dry,sharp,chloride free,or alumi-num oxide,blasting grade.(The size shall be such that it meetsthe following sieve requirements of Specifications E11 andE323.6.2.1 One hundred percent must pass thro