ASTM_D_6203_-_22.pdf

Designation:D620322Standard Test Method forThermal Stability of Way Lubricants1This standard is issued under the fixed designation D6203;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 test method covers the evaluation of the thermalstability of hydrocarbon-based way lubricants,although oxida-tion may occur during the test.1.2 The values stated in SI units are to be regarded asstandard.1.2.1 ExceptionThe values given in parentheses are forinformation only.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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 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:2D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum Products,LiquidFuels,and Lubricants2.2 Other Standards:UNS C11000 Electrolytic Tough Pitch Copper3AISI W1 1%Carbon Tool Steel43.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method,referto Terminology D4175.4.Summary of Test Method4.1 A beaker containing test oil and copper and steel rods isplaced in a gravity convection electric oven for 24 h at a testtemperature of 100 C.At the completion of the test,the copperand steel rods are visually rated for discoloration and thebeaker is visually evaluated for deposits.5.Significance and Use5.1 Thermal stability characterizes physical and chemicalproperty changes which may adversely affect an oils lubricat-ing performance.This test method evaluates the thermalstability of a way lubricant in the presence of copper and steelrods at 100 C.Deposits and rod colors are the evaluationcriteria.No correlation of the test to field service has beenmade.5.2 This test method is intended for use in qualifying a waylubricant,rather than for quality control or condition monitor-ing purposes.6.Apparatus6.1 Gravity Convection Electric Oven,capable of maintain-ing the samples at a test temperature of 100 C 6 2 C.6.2 Calibrated Temperature Indicator,suitable for measur-ing and controlling the oven temperature.6.3 Griffn Beakers,borosilicate glass,100 mL.6.4 CopperTestSpecimens,inaccordancewithUNS C11000,99.9%pure electrolytic tough pitch copper,6.4 mm in diameter by 7.6 cm in length(0.25 in.by 3.0 in.).6.5 Steel Test Specimens,in accordance with AISI W1 1%carbon steel,6.4 mm in diameter by 7.6 cm in length(0.25 in.by 3.0 in.).6.6 Silicon Carbide Abrasive,320 grit with cloth backing.6.7 Crocus Cloth.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.L0.01 on Metal Removal Fluids and Lubricants.Current edition approved Nov.1,2022.Published November 2022.Originallyapproved in 1997.Last previous edition approved in 2017 as D6203 17.DOI:10.1520/D6203-22.2For 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 Copper Development Assoc.,2 Greenwich Office Park,Box1840,Greenwich,CT 06836.4Available from American Iron and Steel Institute(AISI),1140 ConnecticutAve.,NW,Suite 705,Washington,DC 20036,http:/www.steel.org.*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.16.8 Fives Cincinnati Color Chart.56.9 Facial Tissue.7.Reagents7.1 Reagent Grade Acetone.(WarningFlammable,healthhazard.)7.2 Reagent Grade Heptane.(WarningFlammable,health hazard.)8.Preparation of Metal Rods8.1 Handle the rods at all times using forceps,facial tissue,or suitable gloves.8.2 Clean the iron and copper catalyst rods,whether new orpreviously used,prior to use.Clean the rods with the 320 gritsilicon carbide abrasive cloth while rotating the rods in a drillchuck at 1700 revmin to 1800 rev min.Clean the