ASTM_D_1571_-_D_1571M_-_95_2009e1.pdf

Designation:D1571/D1571M95(Reapproved 2009)1Standard Specification forWoven Asbestos Cloth1This standard is issued under the fixed designation D1571/D1571M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,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.1NOTEUnits information was corrected editorially in March 2010.1.Scope1.1 This specification covers woven asbestos cloth having aminimum of 75%asbestos fiber by weight,excluding the massof other inorganic reinforcing strands which may be present.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 independently 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 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 The following safety caveat pertains only to the testmethods portion,Section 13,described in this specification:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.For specific safety hazard,see 1.3.2.Referenced Documents2.1 ASTM Standards:3D123 Terminology Relating to TextilesD299 Specification for Asbestos YarnsD1682 Test Method for Breaking Load and Elongation ofTextile Fabric(Withdrawn 1992)4D1777 Test Method for Thickness of Textile MaterialsD1910 Methods of Test for Construction Characteristics ofWoven Fabrics;Replaced by D 3773,D 3774,D 3775,D 3776,D 3882,D 3883(Withdrawn 1981)4D1918 Test Method for Asbestos Content of Asbestos Tex-tilesD2100 Specification for Asbestos Textiles Used for Electri-cal Insulating PurposesD2946 Terminology for Asbestos and AsbestosCementProductsD3774 Test Method for Width of Textile FabricD3775 Test Method for Warp(End)and Filling(Pick)Countof Woven FabricsD3776 Test Methods for Mass Per Unit Area(Weight)ofFabric3.Terminology3.1 For definitions of other textile terms used in thisspecification,refer to Terminology D123.For asbestos terms,refer to Terminology D2946.3.2 Definitions:3.2.1 asbestos textile,nhydrous magnesium silicate ser-pentine mineral designated as chrysotile and having the em-pirical formula Mg3Si2O5(OH)4.4.Classification4.1 The classes of asbestos cloth are based on the nature ofthe yarns from which they are woven.4.1.1 Class ACloth constructed of asbestos yarns contain-ing no reinforcing strands.4.1.2 Class BCloth constructed of asbestos yarns contain-ing wire reinforcement.4.1.3 Class CCloth constructed of asbestos yarns contain-ing organic reinforcing strands.4.1.4 Class DCloth constructed of asbestos yarns contain-ing nonmetallic inorganic reinforcing strands.1This specification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Productsand is the direct responsibility of SubcommitteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved Nov.1,2009.Published March 2010.Originallyapproved in 1958.Last previous edition approved in 2004 as D1571 95(2004)1.DOI:10.1520/D1571_D1571M-95R09E01.2Available 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 the standards Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.1.5 Class ECloth constructed of two or more of theyarns used in cloth Classes A through D.4.2 GradesThe grades of asbestos cloth are based on thepercentage of asbestos content by mass as stated in Table 1.4.3 Styles:4.3.1 The style designation employed by the ATI uses botha numerical and alphabetical classification.In metallic cloths,the first two digits denote the weight per square yard expressedin ounces.The letter“M”indicates that the fabric is made withmetallic or wire-inserted yarns,and the final digit or digitsindicate the cut number of the yarns employed.In plain ornon-metallic cloths,the meaning of each numerical designationis the same as that used in the metallic cloth classification.Thealphabetical letter designates the weave used.