ASTM_D_3233_-_93_2014.pdf

Designation:D323393(Reapproved 2014)Standard Test Methods forMeasurement of Extreme Pressure Properties of FluidLubricants(Falex Pin and Vee Block Methods)1This standard is issued under the fixed designation D3233;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 These test methods cover two procedures for making apreliminary evaluation of the load-carrying properties of fluidlubricants by means of the Falex Pin and Vee Block TestMachine.NOTE1Additional information can be found in Appendix X1 regard-ing coefficient of friction,load gage conversions,and load gage calibrationcurve.1.2 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.1.3 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 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B16/B16M Specification for Free-Cutting Brass Rod,Barand Shapes for Use in Screw MachinesD2670 Test Method for Measuring Wear Properties of FluidLubricants(Falex Pin and Vee Block Method)D2783 Test Method for Measurement of Extreme-PressureProperties of Lubricating Fluids(Four-Ball Method)3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 actual gage load,nthe value obtained from the gagewhile running the test and before any corrections are made.3.1.1.1 DiscussionThis gage reading is irrespective of theparticular gage used,and corrections are made by comparisonto a standard reference.3.1.2 direct load,nthat which is applied linearly,bisectingthe angle of the vee block corrected to either the 800 or3000-lbf gage reference.3.1.2.1 DiscussionThis load is equivalent to the true loadtimes the cos 42.3.1.3 true load,nthe sum of the applied forces normal tothe tangents of contact between the faces of one vee block andthe journal pin corrected to the 4500 lbf gage reference line.3.1.4 true load failure value,nthe true load at which thelubricant tested can no longer support the applied load resultingin either test pin or shear pin breakage,or inability to maintainor increase load.3.1.4.1 DiscussionThis value is also referred to as thelimit of extreme pressure.4.Summary of Test Methods4.1 Both test methods consist of running a rotating steeljournal at 290 6 10 rpm against two stationary V-blocksimmersed in the lubricant sample.Load is applied to theV-blocks by a ratchet mechanism.In Test Method A(Note 1),increasing load is applied continuously.In Test Method B(Note 1),load is applied in 250-lbf(1112-N)increments withload maintained constant for 1 min at each load increment.Inboth methods the load-fail value obtained is the criteria forlevel of load-carrying properties.Both methods require cali-bration of the load gage and reporting of test results as true(corrected)loads rather than actual gage loads.NOTE2Test Method A is referred to as the Falex Run-Up Test.TestMethod B is referred to as the Falex One-Minute Step Test.5.Significance and Use5.1 Evaluations by both test methods differentiate betweenfluids having low,medium,and high levels of extreme-pressureproperties.The user should establish any correlation betweenresults by either method and service performance.NOTE3Relative ratings by both test methods on the reference fluidscovered in Table 1 and Table 2 are in good general agreement withfour-ball weld-point relative ratings obtained on these same referencefluids,covered in Test Method D2783.1These test methods are under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.L0.11 on Tribiological Properties of Industrial Fluids andLubricates.Current edition approved Dec.1,2014.Published February 2015.Originallyapproved in 1986.Last previous edition approved in 2009 as D3233 93(2009)1.DOI:10.1520/D3233-93R14.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Apparatus6.1 Falex Pin and Vee Block Test Machine,3illustrated inFig.1,Fig.2,and Fig.3,fitted with 4500-lbf(20 000-N)gageor 3000-lbf(13 350-N)gage.6.2 Required for Calibration:6.2.1 Allen Screw,with attached 10-mm Brinnell ball.46.2.2 Back-Up Plug.46.2.3 Standard Test Coupon,4soft,annealed copper,Hb3739.6.2.4 Brinnel