1、Designation:D6915171Standard Practice forCarbon BlackEvaluation of Standard Reference Blacks1This standard is issued under the fixed designation D6915;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、 in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTECorrected Fig.A1.2 editorially in August 2017.1.Scope1.1 This practice covers guidelines for the production andtesting for uniformity of a set of carbo
3、n blacks to be used asStandard Reference Blacks(SRBs).1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibi
4、lity 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 es
5、tablished 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:2D1510 Test Method for Carbon BlackIodine AdsorptionNumberD2414 T
6、est Method for Carbon BlackOil AbsorptionNumber(OAN)D3265 Test Method for Carbon BlackTint StrengthD3493 Test Method for Carbon BlackOil AbsorptionNumber of Compressed Sample(COAN)D4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD
7、4821 Guide for Carbon BlackValidation of Test MethodPrecision and BiasD6556 Test Method for Carbon BlackTotal and ExternalSurface Area by Nitrogen AdsorptionD8043 Guide for Carbon BlackShelf Life3.Significance and Use3.1 This practice is intended to ensure that SRBs areproduced and evaluated by a st
8、andard procedure.3.2 This practice is to be used to establish the averagephysicochemical properties of a set of carbon blacks to be usedas SRBs.3.3 The carbon black grades to be used as SRBs should beselected to give as much coverage of the typical usage rangefor each test and as nearly evenly space
9、d across the range aspossible.Typically,the carbon black grades selected consist ofthree tread(hard)type furnace grades(designatedA,B,and C),three carcass(soft)type furnace grades(designated D,E,andF),and one thermal type grade(designated G).SubcommitteeD24.61 may elect to carry one or more of the e
10、xisting SRBsinto the next set provided there is enough remaining material atthe rate of usage to last through the expected life of the nextset.Limiting the choice of grades to be used means that not alltests will have an SRB set that is evenly spaced across therange of interest.All the SRB candidate
11、s are produced atapproximately the same time by the various producers.Theyare used as a set once they are approved.The sets areconsecutively numbered.Values and identification for thecurrent set are given in Guide D4821.Any SRBs carriedforward will be renumbered for the new set.4.Production,Packagin
12、g,Quality Control,and QualityAssurance4.1 It is assumed that manufacturers of the SRBs will usestate-of-the-art techniques to ensure maximum uniformitythroughout the entire production run.The production should bemade in one continuous production and packaging lot run.Thetesting called for in this pr
13、actice is not intended to be asubstitute for in-process quality control.This interlaboratorystudy is only adequate to verify the quality of a homogeneouslot.1This practice is under the jurisdiction of ASTM Committee D24 on CarbonBlack and is the direct responsibility of Subcommittee D24.61 on Carbon
14、 BlackSampling and Statistical Analysis.Current edition approved May 1,2017.Published May 2017.Originallyapproved in 2003.Last previous edition approved in 2012 as D6915 12.DOI:10.1520/D6915-17E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at s
15、erviceastm.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
16、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 4.2 The size of the lot for each SRB is determined byhistorical records on the rate of use.The lot should have anexpected life of about five years at the most recent rate of use.Historically,the lot size has usually been 10 000 lb.4.2.1 The actu
