ASTM-A623M

Designation:A 623M-03NTERNATIONALMETRICStandard Specification forTin Mill Products,General Requirements [Metric]1This standard is issued under the fixed designation A 623M;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 (e)indicates an diial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.INTRODUCTIONThis specifi cation is the metric counterpart of Specifi cation A623.It is not intended to replaceA 623.Users of the standard should note several very signifi cant differences in how the product isproduced and marketed.(/The metric product does not carry the overrun associated with tin mill products produced tocustomary units.Metric tin mill products are produced to ordered size.(2)The metric product is designated in units of 100 m-called a SITA (System Intemational TinplateArea),rather than in base boxes.(3)The metric product is designated by thickness in millimetres rather than by basis weight.(4)Coating weights are given in grams per square metre,not pounds per base box.(5)Thickness tolerances are given in absolute fi gures instead of a percentage.(6)Each package of metric tin mill products contains 100 sheets,not the 112 of customary unitpackages.All of the above signifi cant differences,as well as others of lesser consequence,should beconsidered when switching from Specifi cation A 623 to A 623M.1.ScopeA 370 Test Methods and Defi nitions for Mechanical Testing1.1 This specifi cation covers a group of common require-of Steel Products2ments which,unless otherwise specifi ed in the purchase orderA 700 Practices for Packaging,Marking,and Loadingor in an individual specifi cation,shall apply to tin millMethods for Steel Products for Domestic Shipmentproducts.A 987 Test Method for Measuring Shape Characteristics of1.2 The following safety hazards caveat pertains to AnnexTin Mill Products"Al through Annex A8 of this specifi cation:This standard doesE 18 Test Methods for Rockwell Hardness and Rockwellnot purport to address all of the safety concers,if any.Superfi cial Hardness of Metallic Materialssassociated with its use.It is the responsibility of the user of thisE 112 Test Methods for Determining the Average Grainstandard to establish appropriate safety and health practicesSizesand determine the applicability of regulatory limitations prior2.2 Military Standards:to use.MIL-STD-129 Marking for Shipment and Storage5MIL-STD-163 Steel Mill Products,Preparation for MarkingNorE 1-This metric specifi cation is equivalent to Specifi cation A 623and Storageand is compatible in technical content.2.3 Federal Standard:2.Referenced DocumentsFed.Std.No.123 Marking for Shipment(Civil Agencies)62.1 ASTM Standards:This specifi cation is under the jurisdiction of ASTM Committee A0l on Steel,2 Annual Book of ASTM Standa