1、Designation: F363 99 (Reapproved 2018)Standard Test Method forCorrosion Testing of Gaskets1This standard is issued under the fixed designation F363; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A numbe
2、r in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the evaluation of gaskets undercorrosive conditions at varying temperature and pressurelevels. The test unit may be
3、glass lined if the flanges aresufficiently plane (industry accepted), thus providing resistanceto all chemicals, except hydrofluoric acid, from cryogenictemperatures to 260C (500F) at pressures from full vacuumto the allowable pressure rating of the unit, or made of othersuitable material. The test
4、unit described (Fig. 1) has aninternal design pressure rating of 1034 kPa (150 psi) at 260C(500F).1.2 The values stated in SI units are to be regarded as thestandard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of t
5、he user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific hazards statements, see Section 5.1.4 This international standard was developed in accor-dance with internationally reco
6、gnized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2F112 Test Method for
7、 Sealability of Enveloped Gaskets2.2 ASME Standards:3B16.21 Nonmetallic Gaskets for Pipe Flanges2.3 ASTM Adjuncts:4Leakage Test Unit3. Significance and Use3.1 This test method is designed to compare all types ofgaskets under simulated field operating conditions. Perfor-mance of a gasket can thus be
8、measured prior to the start-up ofchemical processes.5The design of the test unit providesmaximum range of corrosion resistance so that meaningfulresults are possible. This test method may be used as a routinetest when agreed upon between the purchaser and the seller.4. Apparatus4.1 Corrosion Test Un
9、itThe unit6shall contain a suitablethermowell, strategically placed near the center so that correcttemperature readings may be made. The gasket seating sizeshall be such as to accommodate a standard 102-mm (4-in.)size gasket.4.2 Heat SourceA 3-A (660-W, 220-V) electric heater hasbeen found to be sat
10、isfactory to heat the unit in the verticalposition to 232C (450F). If the unit is to be testedhorizontally, the fixture should be in a suitable environmentalchamber or oven capable of attaining the desired temperatures.4.3 Necessary Control EquipmentA suitable thermo-switch with damping capacitor an
11、d indicator light to providemeans of adjusting as well as control of temperature. Thecircuitry shown in Fig. 2 will control the unit within 63C(65F).4.4 Thermometer, having 0.5C graduations.5. Hazards5.1 Since the test unit is not vented, corrosive liquids thatare likely to be unstable at the test t
12、emperature should not beused. The heater wattage should be limited so that a runaway1This test method is under the jurisdiction of ASTM Committee F03 on Gasketsand is the direct responsibility of Subcommittee F03.40 on Chemical Test Methods.Current edition approved Aug. 1, 2018. Published September
13、2018. Originallyapproved in 1973. Last previous edition approved in 2011 as F363 99 (2011).DOI: 10.1520/F0363-99R18.2For 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
14、the standards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.4Available from ASTM International Headquarters. Order Adjunct No.ADJF0363.5Supporting
15、data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:F03-1002.6The sole source of supply of the apparatus known to the committee at this timeis The Pfaudler Co., P.O. Box 23600, Rochester, NY 14692. If you are aware ofalternative suppliers, plea
16、se provide this information to ASTM InternationalHeadquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee,1which you may attend.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesTh
17、is international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (
18、TBT) Committee.1condition will not produce a dangerously high temperature.The user should be aware that under certain conditions oftesting, these safety considerations may prove to be inadequate.Additional safety precautions that may be highly desirableunder certain conditions are left to the discre
19、tion of the user.6. Test Specimen6.1 The test specimen shall be dimensioned in accordancewith ASME Class 150, 4 in. size with inside diameter 114 mm(4.50 in.) and outside diameter 175 mm (6.88 in.) as stated inDocument ASME B16.21. The thickness of the test gasket willdepend on the expected usage an
20、d must be specified in thereport.6.2 Preconditioning of the test gasket is not necessary, sincethis test is designed for shelf-stock gaskets; and, presumably,components affected by aging or normal storage conditionswould not be used in their construction.7. Procedure7.1 Place the test unit in a rest
21、raining jig designed to assistin applying torque to the clamping bolts.7.2 Carefully introduce 500 mL of the selected corrosivetest solution into the test unit.7.3 Locate the test gasket specimen properly on the lowerflange.7.4 Assemble the cover using the bolts, nuts, and washers.NOTE 1Lightly sand
22、ing the contacting surfaces of the washers andnuts will minimize variability among torqued bolts aiding in replication oftest results.7.5 Lubricate the bolt threads well using molybdenumdisulfide dry film or grease.7.6 The test torque value may be obtained either (1) throughthe use of the sealabilit
23、y fixture for enveloped gaskets (see TestMethod F112), to which 25 % should be added for safety; (2)from the gasket manufacturers recommendation; or (3)byestablishing an acceptable leak rate and using the correspond-ing torque figures.NOTE 2Check that the additional safety factor does not exceed the
24、permissible load on the bolts.7.7 To apply the required torque, tighten the bolts graduallyand evenly, following the sequence indicated by the numbers inFig. 3. Progression of the tightening on each bolt should be inapproximately 20Nm(15lbfft)increments.7.8 If both vapor and liquid phase test result
25、s are desired,place the bolted and assembled test unit on its side in an ovenor environmental chamber.7.9 If only vapor phase results are required, place the testunit in an upright position. Use the electric heater to bring theunit to the desired temperature and adjust the thermoswitch asshown by th
26、e indicator light.7.10 Retighten the bolts to the final torque previously usedafter2hattheregulated temperature.7.11 Continue the test for approximately 24 h; turn off theheat supply for an 8-h period during each of the next threedays. Continue the test at the desired temperature withoutcycling for
27、the remainder of the prescribed test period. TwoFIG. 1 Test UnitFIG. 2 Control CircuitNOTE 1Tighten bolts evenly. Follow numerical sequence shown.FIG. 3 Bolt Tightening SequenceF363 99 (2018)2weeks has been found to be sufficient time to provide mean-ingful performance information.7.12 Do not disman
28、tle the unit until it has been cooled toroom temperature, and then only with suitable protectiveequipment and with accepted (or standard) safety precautions.7.13 Measure the liquid remaining in the test unit.7.14 Examine the remaining liquid for discoloration.7.15 Examine the gasket for discoloratio
29、n, cracks, heateffects (such as darkening, carbonizing, hardening), and otherindications of attack or failure.7.16 Check for physical deformations as a result of heat andpressure, or a combination of the two.8. Report8.1 Report the following information:8.1.1 Identification of gasket,8.1.2 Specimen
30、thickness,8.1.3 Temperature of test,8.1.4 Description of corrosive solution,8.1.5 Test conducted with vapor only (upright) or bothvapor and liquid (on the side),8.1.6 Pressure of test (from temperature-pressure tables ofthe corrosive used in the test),8.1.7 Bolt torque used,8.1.8 Corrosive and heat
31、effects on the gasket, as indicatedby darkening, cracking, or disintegration, and8.1.9 Solution losses, if any.9. Precision and Bias9.1 Since the results of this test are reported as visualobservations only, no precision or bias statements are possible.10. Keywords10.1 corrosion testing; gasketsASTM
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33、irely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsan
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35、n Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 99 (2018)3
