1、Designation:A1073/A1073M17Standard Practice forUsing Hand Micrometers to Measure the Thickness ofUncoated Steel Sheet and Nonmetallic and Metallic-CoatedSteel Sheet1This standard is issued under the fixed designation A1073/A1073M;the number immediately following the designation indicates theyear of
2、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.Scope*1.1 This practice defines procedures for measuring thethickness of un
3、coated steel sheet and nonmetallic and metallic-coated steel sheet.Thickness is a significant quality character-istic of steel sheet products.The ability to accurately measurethickness using hand micrometers is critical in determiningproduct conformance to specifications.The methods describedare des
4、igned and intended for use in both laboratory and plantsituations and their environments.1.2 The flat steel product shall conform to all the require-ments of the appropriate specifications as follows:Specifica-tions A109/A109M,A505,A568/A568M,A635/A635M,A684/A684M,and A924/A924M.1.3 Quantitative lim
5、its are not addressed and are establishedinthegeneralrequirements,orindividualproductspecifications,or both;or when applicable,as agreed tobetween supplier and user.1.4 This specification is applicable to orders in eitherinch-pound units or SI units.Values in inch-pound and SI unitsare not necessari
6、ly equivalent.Within the text,SI units areshown in brackets.Each system shall be used independently ofthe other.1.5 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
7、 and health practices and determine the applica-bility of regulatory limitations prior to use.1.6 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 Stan
8、dards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A109/A109M Specification for Steel,Strip,Carbon(0.25Maximum Percent),Cold-RolledA505 Specification for Steel,Sheet and Strip,Alloy,Hot-Rolled an
9、d Cold-Rolled,General Requirements forA568/A568M Specification for Steel,Sheet,Carbon,Structural,and High-Strength,Low-Alloy,Hot-Rolled andCold-Rolled,General Requirements forA635/A635M Specification for Steel,Sheet and Strip,Heavy-Thickness Coils,Hot-Rolled,Alloy,Carbon,Structural,High-Strength Low
10、-Alloy,and High-StrengthLow-Alloy with Improved Formability,General Require-ments forA684/A684M Specification for Steel,Strip,High-Carbon,Cold-RolledA902 Terminology Relating to Metallic Coated Steel Prod-uctsA924/A924M Specification for General Requirements forSteel Sheet,Metallic-Coated by the Hot
11、-Dip Process3.Terminology3.1 DefinitionsSee Terminology A902 for definitions ofgeneral terminology relating to metallic-coated hot-dip prod-ucts.3.2 The definitions and procedures for measuring thicknesscharacteristics of steel sheet products are provided so thatpurchasers and suppliers have common
12、definitions and mea-suring procedures for thickness measurements.The intentionof these definitions and measuring methods is not to providedimensional specifications for thickness characteristics,butrather common procedures for quantifying thickness values.For determining compliance with thickness sp
13、ecifications,references are provided to appropriate ASTM standards.1This practice is under the jurisdiction of ASTM Committee A05 on Metallic-Coated Iron and Steel Products and is the direct responsibility of SubcommitteeA05.07 on Methods of Testing.Current edition approved May 1,2017.Published May
14、2017.Originallyapproved in 2012.Last previous edition approved in 2016 as A1073/A1073M-16.DOI:10.1520/A1073_A1073M-17.2For 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
15、 standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationall
16、y 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 4.Apparatus4.1 Micrometers used for thickness measurement shall beconstructed with anvils and spindles having minimum diam-eters of 0.188 in.4.80 mm.The tip of the anvil shall be flator rounded with a minimum radius of curvature of 0.10 in.2.55 mm and the tip