ASTM_D_6015_-_21.pdf

Designation:D601521Standard Test Method forStatic Water Absorption of Leather1This standard is issued under the fixed designation D6015;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the determination of the amountof water absorbed by leather at 23 C 6 2 C by immersionunder static conditions.It may be used on all types of leather.This test method does not apply to wet blue or wet white.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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:2D1517 Terminology Relating to LeatherD1610 Practice for Conditioning Leather and Leather Prod-ucts for TestingD2813 Practice for Sampling Leather for Physical andChemical Tests3.Terminology3.1 For definitions of leather terms used in this test methodrefer to Terminology D1517.4.Summary of Test Method4.1 In this test method the amount of water absorbed by aleather specimen is measured at room temperature with allsurfaces exposed to water.5.Significance and Use5.1 This test method is used to determine compliance withspecifications for water absorption of upper leather.Thesignificance of the test method is limited by the static condi-tions employed,and the results do not reflect the waterabsorption under dynamic conditions of flexing.6.Apparatus6.1 Beaker,1000 mL.6.2 Balance,sensitive to 0.01 g.6.3 Blotting Paper.36.4 Timer.6.5 1000 g of weight.7.Test Specimen7.1 When taking test specimens from skins or hides refer toPractice D2813.7.2 The test specimen shall be a square of leather approxi-mately 4 in.by 4 in.(102 mm by 102 mm).7.3 Unless otherwise specified in the detail specification,one specimen from each test unit of sample shall be tested.7.4 Prior to testing,the specimen shall be conditionedaccording to Practice D1610.8.Procedure8.1 Weigh the specimen to the nearest 0.01 g and record themass as W1.8.2 One to three specimens shall be completely immersed ina 1000 mL beaker of distilled water at 23 C 6 2 C.This1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.03 on Footwear.Current edition approved Dec.1,2021.Published January 2022.Originallyapproved in 1996.Last previous edition approved in 2014 as D6015-14.DOI:10.1520/D6015-21.2For 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.3Blotting paper suitable to meet requirements of this method can be purchasedat either:AATCC,Order#08344a,P.O.Box 12215,Research Triangle Park,NC27709-2215,www.aatcc.org or Testfabrics Inc.,P.O.Box 26,West Pittiston,PA18643,.Copyright 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.1?should be done in such a manner that the surface of thespecimens do not touch each other.8.3 After 1 h 6 1 min or other agreed upon immersion timeinterval,the specimens shall be removed from the beaker andthe surface water from each removed by lightly blotting thespecimen with blotting paper prior to weighing.8.4 Blotting paper that has been cut to the same size as theleather test specimen shall be used.A4 in.by 4 in.(102 mm by102 mm)non-water absorbing,rigid flat plate shall be placedon a level surface.Two dyed squares of blotting paper shall bestacked upon the rigid flat plate.One test specimen shall beremoved from the container and placed,grain up on top of theblotting squares.Two more blotting paper squares shall beplaced upon the first spe