1、Designation:D1118/D1118M95(Reapproved 2017)Standard Test Method forMagnetic Rating of Asbestos Fiber and Asbestos Textiles1This standard is issued under the fixed designation D1118/D1118M;the number immediately following the designation indicates theyear of original adoption or,in the case of revisi
2、on,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the procedure for the determi-nation of the magnetic rating of asbestos fiber and as
3、bestostextile products.This test method is used primarily for testingasbestos insulating materials.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used ind
4、ependently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and for those with whom they come into contact.In addition to other
5、 precautions,when working with asbestos-cement products,minimize the dust that results.For informa-tion on the safe use of chrysoltile asbestos,refer to“Safe Useof Chrysotile Asbestos:A Manual on Preventive and ControlMeasures.”21.4 This standard does not purport to address all of thesafety concerns
6、,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.For specific safetyhazard,see.1.5 This international standard was developed in accor-danc
7、e 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 Standard
8、s:3D123 Terminology Relating to TextilesD2100 Specification for Asbestos Textiles Used for Electri-cal Insulating PurposesD2590 Test Method for Sampling Chrysotile AsbestosD2946 Terminology for Asbestos and AsbestosCementProductsD2947 Test Method for Screen Analysis of Asbestos FibersD3879 Test Meth
9、od for Sampling Amphibole Asbestos(Withdrawn 2009)4E11 Specification for Woven Wire Test Sieve Cloth and TestSieves2.2 ASTM Adjuncts:Metallic Analyzer Drawings53.Terminology3.1 For definitions of other textile terms used in this testmethod,refer to Terminology D123.For terms relating toasbestos,refe
10、r to Terminology D2946.3.2 Definitions:3.2.1 asbestos fiber,nThe hydrous magnesium silicateserpentine mineral designated as chrysotile and having theempirical formula Mg3Si2O5(OH)4.3.2.2 atmosphere for testing textiles,nfor asbestos,airmaintained at a relative humidity of 50 6 2%at 70 6 2F 216 1C.3.
11、2.3 magnetic rating(MR),nan empirical value reflect-ing the effect of the magnetic particles,such as magnetic ironcompounds,in asbestos material as measured by a magneticeffect analyzer.It is not a quantitative measure of the magneticparticles in the material.Magnetic rating is affected by the1This
12、test method is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved June 1,2017.Published July 2017.Originally approvedin 1950.Last previous ed
13、ition approved in 2009 as D1118/D1118M 95(2009)1.DOI:10.1520/D1118_D1118M-95R17.2Available from The Asbestos Institute,http:/ 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
14、the standards Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from ASTM International Headquarters.Order Adjunct No.ADJD1118.Original adjunct produced in 1986.Copyright ASTM International,100 Barr Harbor Drive,PO
15、 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 th
16、e World Trade Organization Technical Barriers to Trade(TBT)Committee.1 quantity,concentration,particle size,shape,and orientation ofthe magnetic particles in the material.3.2.4 unit magnetic rating(1 MR),na calibrating standardwith an MR of one is defined as containing 0.18 g of U.S.National Institute of Standards and Technology standardsample No.29(a)or iron ore(magnetite)uniformly distributedover the space specified for a 10-g test specimen(19 mm 0.75in.diameter by 73 mm 2.875 in.long),by disp
