ASTM_D_6074_-_15_2022.pdf

Designation:D607415(Reapproved 2022)Standard Guide forCharacterizing Hydrocarbon Lubricant Base Oils1This standard is issued under the fixed designation D6074;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 guide suggests physical,chemical,and toxicologi-cal test methods for characterizing hydrocarbon lubricant baseoils derived from various refining processes including re-refining used oils and refining crude oil.This guide does notcontain limits nor does it purport to cover all tests which couldbe employed;rather,it represents the first step in betterdescribing important parameters of lubricant base oils affectinglubricant performance and safe handling.Tests have beenidentified to characterize the composition and performance ofbase oils in addition to verifying their consistency.Undesirablecomponents have also been identified with a range of typicallevels.These are not limits.It is the responsibility of the buyerand seller to determine and agree upon the implementation ofthis guide.1.2 This guide applies only to base oils and not to finishedlubricants.1.3 Base oils containing detectable levels of esters,animalfats,vegetable oils,or other materials used as,or blended into,lubricants are not covered by this guide.1.4 This guide is relevant to base oils composed of hydro-carbons and intended for use in formulating products includingautomotive and industrial lubricants.Although not intended tocover all base oil viscosity grades,this guide does cover themajority of viscosities that would be used in both automotiveand industrial oil formulations.These base oils would typicallyhave a viscosity of approximately 2 mm2/s to 40 mm2/s(cSt)at100 C(50 SUS to 3740 SUS at 100 F).1.5 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.6 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized 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:2D91 Test Method for Precipitation Number of LubricatingOilsD92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD93 Test Methods for Flash Point by Pensky-MartensClosed Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD130 Test Method for Corrosiveness to Copper from Petro-leum Products by Copper Strip TestD189 Test Method for Conradson Carbon Residue of Petro-leum ProductsD287 Test Method for API Gravity of Crude Petroleum andPetroleum Products(Hydrometer Method)D341 Practice for Viscosity-Temperature Equations andCharts for Liquid Petroleum or Hydrocarbon ProductsD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D524 Test Method for Ramsbottom Carbon Residue ofPetroleum ProductsD664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD974 Test Method for Acid and Base Number by Color-Indicator TitrationD1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD1401 Test Method for Water Separability of Petroleum Oilsand Synthetic FluidsD1500 Test Method for ASTM Color of Petroleum Products1This guide is under the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.P0 on Recycled Products.Current edition approved Oct.1,2022.Published October 2022.Originallyapproved in 1998.Last previous edition approved in 2015 as D6074 15.DOI:10.1520/D6074-15R22.2For 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 StatesThis 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(TBT)Committee.1(ASTM Color Scale)D2007 Test Method for Characteristic Groups in