ASTM_D_2059_-_D_2059M_-_03_2014.pdf

Designation:D2059/D2059M03(Reapproved 2014)Standard Test Method forResistance of Zippers to Salt Spray(Fog)1This standard is issued under the fixed designation D2059/D2059M;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.1.Scope1.1 This test method covers the determination of the resis-tance of all types of zippers to corrosion and their ability tofunction properly after exposure of specified duration in aprescribed salt spray.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 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B117 Practice for Operating Salt Spray(Fog)ApparatusD123 Terminology Relating to TextilesD2050 Terminology Relating to Fasteners and ClosuresUsed with TextilesD2051 Test Method for Durability of Finish of Zippers toLaunderingD2052 Test Method for Colorfastness of Zippers to Dry-cleaningD2053 Test Method for Colorfastness of Zippers to LightD2054 Test Method for Colorfastness of Zipper Tapes toCrockingD2057 Test Method for Colorfastness of Zippers to Laun-deringD2058 Test Method for Durability of Finish of Zippers toDrycleaningD2060 Test Methods for Measuring Zipper DimensionsD2061 Test Methods for Strength Tests for ZippersD2062 Test Methods for Operability of Zippers2.2 U.S.Government Standard:MIL-STD-105D Sampling Procedures and Tables for In-specting Attributes33.Terminology3.1 Definitions:3.1.1 For definitions of zipper terms used in this standardrefer to Terminology D2050.For definitions of other,textileterminology used in this standard refer to Terminology D123.4.Summary of Test Method4.1 The effects of corrosion on zippers,should it occur,areevaluated visually and by measuring the crosswise strength andthe force required to open and close the zipper both before andafter exposure in a prescribed salt-spray atmosphere for aspecified time.5.Significance and Use5.1 The resistance of a zipper to a variety of saline andnon-saline environments can be estimated from the amount andnature of corrosion products and their effect on operability.Results of exposure to the salt spray are merely indicative ofthe reaction to other corrosive conditions.While the resultscannot be related precisely to a given length of exposure in aspecific atmosphere,they are useful for measuring relativeperformance under prescribed conditions for controlling amanufacturing process,and for measuring the effectiveness ofprotective coatings.5.2 Test Method D2059 for the determination of the resis-tance of zippers to salt spray is considered satisfactory foracceptance testing of commercial shipments of zippers becausethe test method is used extensively in the trade for acceptancetesting.5.2.1 If there are differences of practical significance be-tween reported test results for two laboratories(or more),comparative test should be performed to determine if there is a1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.54 on Subassemblies.Themethod was developed in cooperation with the Slide Fastener Assn.,Inc.Current edition approved Feb.1,2014.Published March 2014.Originallyapproved in 1961.Last previous edition approved in 2003 as D2059 03(2009).DOI:10.1520/D2059_D2059M-03R14.2For referenced ASTM standards,visit the ASTM web site,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 web site.3Available from Naval Publications and Forms Center,5801 Tabor Ave.,Philadelphia,PA 19120.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 statistical bias between them,using competent statistical assis-tance.As a minimum,the test samples should be used that areas homogeneous as possible,that are drawn from the materialfrom which the disparate test results were obtained,and thatare randomly assigned in equal numbers to each laboratory fortesting.Other materials with established test values may beused for this purpose.The test results from the two laboratoriesshould be compared using a statistical test for unpaired data,ata probability level chosen prior to the testing series.If a bias isfound,either its cause must be