ASTM_D_1909_-_13.pdf

Designation:D190913StandardTables of Commercial Moisture Regains and CommercialAllowances for Textile Fibers1This standard is issued under the fixed designation D1909;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.Scope1.1 These tables list the commercial moisture regains andcommercial allowances commonly used for a number of textilefibers.Such moisture regain and allowance values are intendedprimarily for determining the commercial weight of a specificfiber when the fiber is bought or sold on this basis.These regainand allowance values also are used in calculating the lineardensity of yarn in procedures employing such factors and in thequantitative analysis of fiber blends.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD2118 Practice for Assigning a Standard Commercial Mois-ture Content for Wool and its ProductsD2494 Test Method for Commercial Mass of a Shipment ofYarn or Manufactured Staple Fiber or TowD2720 Practice for Calculation of Commercial Weight andYield of Scoured Wool,Top,and Noil for Various Com-mercial CompositionsD4920 Terminology Relating to Conditioning,Chemical,and Thermal Properties2.2 BISFA Standard:3BISFA Terminology of Man-made Fibers3.Terminology3.1 Definitions:3.1.1 For all terminology related to Conditioning and,Chemical and Thermal Properties,see Terminology D4920.3.1.1.1 The following terms are relevant to this standard:commercial moisture regain(CMR),commercial allowance(CA).3.1.2 For definitions of all other textile terms,refer toTerminology D123.4.Significance and Use4.1 The value listed for the commercial moisture regain andcommercial allowance of a specific fiber type is not anexperimentally determined quantity but a purely defined valuearrived at for commercial purposes by interested parties.Theactual moisture regain values of textile materials,when inmoisture equilibrium with the standard atmosphere for testing,can deviate from the listed values.Equilibrium moisture regainvalues depend upon the previous history of the material.Theactual finish content of textile materials can deviate from thelisted values(see Test Method D2494).5.Table of Commercial Moisture Regain Values5.1 Commercial moisture regain values for specified fibersare listed in Table 1.5.2 Commercial allowance values for specified fibers arelisted in Table 2.6.Keywords6.1 moisture regain;textile fiber1These tables are under the jurisdiction of ASTM Committee D13 on Textilesand are the direct responsibility of Subcommittee D13.51 on Conditioning and,Chemical and Thermal Properties.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 1961.Last previous edition approved in 2004 as D1909 04(2012).DOI:10.1520/D1909-13.2For 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 tot he standards Document summary page onthe ASTM website.3International Bureau for the Standardization of Man-Made Fibres,Avenue E.Van Nieuwenhuyse 6,1160 Brussels,www.bisfa.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TABLE 1 Commercial Moisture Regain ValuesFiberCommericalMoistureRegain,%FiberCommericalMoistureRegain,%Acetate(secondary)6.5ModacrylicGAcrylic1.5Class I0.4Aramid,forAClass II2.0High Modulus Yarn3.5Class III3.0Standard Yarn7.0Nylon(polyamide)4.5Azlon10.0Olefin0.0CottonPolyester0.4Raw cottonBRamieNatural cotton yarn7.0CRaw7.6Dyed cotton yarn8.0CScoured7.8Mercerized cotton yarn8.5CRayon(regenerated cellulose)11.0Flax(raw)12.0DRubber0.0Flax(linen)8.75Saran0.0Fluorocarbon0.0Silk11.0Glass0.0Spandex1.3Hemp12.0DTriacetate(primary)3.5Jute13.75DVinal4.5Metallic0.0Vinyon0.0Wool(all forms)13.6E,FAAramid polymers are manufactured for specific but diverse end uses and have nominal regains that vary in the range 1.5 to 7.0%.The values listed in the table are thecommercial regains of fibers currently produced.BThere is no commercial regain value for raw cotton in U.S.trade.The value specified in Rule 15 of the Egyptian sales contracts and in Rule 105 of the Liverpool salescontract for Egyptian and Syrian cotton is 8.5.The value 8.5 is also used customarily for the cotton component of blends containing cotton in the process of performingquantitative analysis.CCommercial Standard CS11-63,which is issued by the National Bureau of Standards,recommends these values to be used for cotton yarns by dyers and finishers.DThese values are the official commercial moisture regains listed in British Standards Handbook 11,Methods of Test for Textiles,Section 1,1963.EA moisture content of 12.0%,which is equal to a moisture regain of 13.6%,has been recommended for all wool ya