1、Designation:A906/A906M02(Reapproved 2016)Standard Specification forGrade 80 and Grade 100 Alloy Steel Chain Slings forOverhead Lifting1This standard is issued under the fixed designation A906/A906M;the number immediately following the designation indicates the yearof original adoption or,in the case
2、 of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements and methodof rating and testing for alloy chain slings
3、.Slings shall beassembled using components manufactured in accordance withSpecification A391/A391M for Grade 80 chain,SpecificationA973/A973M for Grade 100 chain,and Specification A952/A952M for other components.This specification coverswelded and mechanically assembled slings.1.2 This specification
4、 does not cover slings used at elevatedtemperatures(above 400F 200C),in harmful or corrosiveenvironmental conditions or for applications such as nonsym-metrical legs or loading.1.3 This specification is a performance and assembly speci-fication.Other standards,such as OSHA 1910.184,ASMEB30.9,and ASM
5、E B30.10,apply to the use of the products inthis specification.1.4 The values stated in either inch-pound units or SI unitsshall be regarded separately as standard.Within the text,the SIunits are shown in brackets.The values stated in each systemare not exact equivalents;therefore each system shall
6、be usedindependently of the other,without combining values in anyway.2.Referenced Documents2.1 ASTM Standards:2A391/A391M Specification for Grade 80 Alloy Steel ChainA952/A952M Specification for Forged Grade 80 and Grade100 Steel Lifting Components and Welded AttachmentLinksA973/A973M Specification
7、for Grade 100Alloy Steel Chain2.2 Other Standards:OSHA 1910.1843ASME B30.9 Slings4ASME B30.10 Hooks43.Terminology3.1 Definitions:3.1.1 chain slingan assembly consisting of alloy steelchain or chains joined to suitable upper and lower fittings,according to the provisions of this specification,for att
8、achingloads to be lifted by a crane or lifting machine.3.1.2 coupling linka link fitted to the end of the chain toconnect to another component of the sling.See Fig.1.3.1.3 master coupling link(secondary or intermediatelink)a link used on three and four leg slings to connect thelegs to a master link.
9、See Fig.1.3.1.4 master linka link used as the upper end componentof a chain sling and by means of which the sling is attached toa crane or other lifting machine.See Fig.1.3.1.5 overhead liftingthat process of lifting which wouldelevate a freely suspended load to such a position that droppingthe load
10、 would present a possibility of bodily injury or propertydamage.3.1.6 proof testa term designating a quality control testapplied to a sling or to components of a sling.It is theminimum force in pounds or newtons which the sling andcomponents have withstood under a test in which a constantlyincreasin
11、g force has been applied in direct tension.3.1.7 length(reach)the distance from the bearing point ofthe upper end fitting to the bearing point of the lower endfitting.See Fig.1.3.1.8 sling anglethat angle measured between the hori-zontal plane and the leg(legs)of the sling.See Tables 1-3.1This speci
12、fication is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.27 on Steel Chain.Current edition approved Sept.1,2016.Published September 2016.Originallyapproved in 1991.Last previous edition approved in 2010 a
13、s A906/A906M 02(2010).DOI:10.1520/A0906_A0906M-02R16.2For 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.3Available fr
14、om Occupational Safety and Health Administration(OSHA),200Constitution Ave.,NW,Room Number N3626,Washington,DC 20210,http:/www.osha.gov.4Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.org.Copyright ASTM
15、 International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.9 working load limit(WLL)the maximum load whicha sling is designed to support in direct tension without shockloading at a designated sling angle of lift.4.Classification4.1 There are two grades of cha
16、in slings covered under thisspecification.The size of a sling is denoted by the size of thechain used in its manufacture.The grade of a sling is denotedby the lowest grade component used in its manufacture.4.1.1 Grade 80.4.1.2 Grade 100.5.Ordering Information5.1 It shall be the responsibility of the purchaser to specifyall requirements that are necessary for material ordered underthis specification.Such requirements to be considered include,but are not limited to,the following:5.1.1 Conformance
