ASTM_D_6158_-_18.pdf

Designation:D615818Standard Specification forMineral Hydraulic Oils1This standard is issued under the fixed designation D6158;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.Scope*1.1 This specification covers mineral and synthetic oils ofthe types API groups I,II,III,and IV used in hydraulicsystems,where the performance requirements demand fluidswith one of the following characteristics:1.1.1 A refined base oil or synthetic base stock(Class HH),1.1.2 A refined mineral base oil or synthetic base stock withrust and oxidation inhibitors(Class HL),1.1.3 A refined mineral base oil or synthetic base stock withrust and oxidation inhibitors plus anti-wear characteristics(Class HM),1.1.4 A refined mineral base oil or synthetic base stock withrust and oxidation inhibitors,anti-wear characteristics,andincreased viscosity index higher than 140(Class HV),1.1.5 A refined mineral base oil or synthetic base stock withrust and oxidation inhibitors plus anti-wear characteristicsmeeting a higher performance level than an HM fluid toaddress higher demanding hydraulic systems(Class HMHP),and1.1.6 A refined mineral base oil with rust or synthetic basestock and oxidation inhibitors,anti-wear characteristics,andincreased viscosity index higher than 140 meeting a higherperformance level than an HV fluid to address higher demand-ing hydraulic systems(Class HVHP).1.2 This specification defines the requirements of mineraloil-based or synthetic-based hydraulic fluids that are compat-ible with most existing machinery components when there isadequate maintenance.1.3 This specification defines only new lubricating oilsbefore they are installed in the hydraulic system.1.4 This specification defines specific types of hydraulicoils.It does not include all hydraulic oils.Some oils that are notincluded may be satisfactory for certain hydraulic applications.Certain equipment or conditions of use may permit or requirea wider or narrower range of characteristics than those de-scribed herein.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5.1 ExceptionIn X1.3.9 on Wear Protection,the valuesof pump pressure are in MPa,and the psi follows in brackets asa reference point immediately recognized by a large part of theindustry.1.6 The following safety hazard caveat pertains to the testmethods referenced in this specification.This standard doesnot purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety,health,and environ-mental practices and determine the applicability of regulatorylimitations 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:2D92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD130 Test Method for Corrosiveness to Copper from Petro-leum Products by Copper Strip TestD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D471 Test Method for Rubber PropertyEffect of LiquidsD664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD665 Test Method for Rust-Preventing Characteristics ofInhibited Mineral Oil in the Presence of WaterD892 Test Method for Foaming Characteristics of Lubricat-ing Oils1This specification is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.N0.10 on Specifications.Current edition approved Oct.1,2018.Published October 2018.Originallyapproved in 1997.Last previous edition approved in 2016 as D6158 16.DOI:10.1520/D6158-18.2For 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.*A Summary of Changes section appears at the end of this standardCopyright 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 D943 T