ASTM_C_868_-_02_2012.pdf

Designation:C86802(Reapproved 2012)Standard Test Method forChemical Resistance of Protective Linings1This standard is issued under the fixed designation C868;the number immediately following the designation indicates the year oforiginal adoption or,in the case of 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.1.Scope1.1 This test method covers a procedure for evaluating thechemical resistance of a polymer-based protective lining inimmersion service.The method closely approximates theservice conditions,including the temperature differential be-tween the external and internal surfaces of the equipment,which may accelerate permeation of the lining by a corrosivemedia.1.2 This test may be used to simulate actual field useconditions insofar as a qualitative evaluation of the liningsystem after a predetermined period of exposure.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 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 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A36/A36M Specification for Carbon Structural SteelA285/A285M Specification for Pressure Vessel Plates,Car-bon Steel,Low-and Intermediate-Tensile StrengthC267 Test Methods for Chemical Resistance of Mortars,Grouts,and Monolithic Surfacings and Polymer ConcretesD471 Test Method for Rubber PropertyEffect of LiquidsD714 Test Method for Evaluating Degree of Blistering ofPaintsD785 Test Method for Rockwell Hardness of Plastics andElectrical Insulating MaterialsD1474 Test Methods for Indentation Hardness of OrganicCoatingsD2583 Test Method for Indentation Hardness of Rigid Plas-tics by Means of a Barcol ImpressorD3363 Test Method for Film Hardness by Pencil TestD4417 Test Methods for Field Measurement of SurfaceProfile of Blast Cleaned SteelD4541 Test Method for Pull-Off Strength of Coatings UsingPortable Adhesion TestersD5162 Practice for Discontinuity(Holiday)Testing of Non-conductive Protective Coating on Metallic Substrates2.2 NACE Standard:NACE No.1/SSPC-SP-5 White Metal Blast Cleaning33.Significance and Use3.1 The results obtained by this test method should serve asa guide in,but not as the sole basis for,selection of a liningmaterial for particular application.Simple chemical-resistanceevaluations of the lining materials may be performed moreconveniently by other pertinent methods as a prescreening testfor this procedure in accordance with Test Methods C267 andD471.4.Apparatus4.1 Four-Neck Cylindrical,Borosilicate-Type Glass TestCell4,similar to the unit shown in Fig.1.4.1.1 Where an additional inlet is needed for a thermocoupleor thermistor to control temperature,a five-neck cell should beused.NOTE1If test solutions that are known to attack glass such as HF orcaustic,a fluorocarbon or other suitable cell should be used.4.2 Heating Equipment:4.2.1 The corrosive media may be heated by an electrical-resistant coil fitting inside the test cell.This is protected by aglass immersion tube.The heater shall be controlled through1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.46 on Industrial Protective Coatings.Current edition approved Aug.1,2012.Published September 2012.Originallyapproved in 1977.Last previous edition approved in 2008 as C868 02(2008).DOI:10.1520/C0868-02R12.2For 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 standards Document Summary page onthe ASTM website.3Available from Society for Protective Coatings(SSPC),40 24th St.,6th Floor,Pittsburgh,PA 15222-4656,http:/www.sspc.org.4The sole source of supply of the four-neck cylindrical,borosilicate-type glasstest cell known to the committee at this time is DelVal Glass Inc.,1135 E.7th St.,Wilmington,DE.If you are aware of alternative suppliers,please provide thisinformation to ASTM International Headquarters.Your comments will receivecareful consideration at a meeting of the responsible technical committee,1whichyou may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the use of a rheostat or thermostat to produce the desiredtemperature 64F(2C).4.2.2 An electrical heating tape may be wrapped around theexterior of the test cell but not around the test panels and maynot touch the test panels.4.3 Reflux Water Condenser,to maintain a constant leveland c