1、Designation: A906/A906M 02 (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
2、 case 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 ch
3、ain slings. 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
4、 specification 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
5、, ASMEB30.9, and ASME 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; the
6、refore each system shall 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 AttachmentLin
7、ksA973/A973M Specification 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 o
8、f this specification, for attachingloads 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 c
9、onnect thelegs to a master link. 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 s
10、uch a position that droppingthe load 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
11、a test in which a constantlyincreasing 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 (leg
12、s) of the sling. See Tables 1-3.1This specification 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 i
13、n 1991. Last previous edition approved in 2010 as 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
14、 Document Summary page onthe ASTM website.3Available from 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 P
15、ark Ave., New York, NY 10016-5990, http:/www.asme.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.9 working load limit (WLL)the maximum load whicha sling is designed to support in direct tension without shockloading at a desig
16、nated sling angle of lift.4. Classification4.1 There are two grades of chain 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
17、.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 to ASTM designation A
18、906 or A906Mand year of issue,5.1.2 Size of sling in inches millimetres,5.1.3 Grade of sling,5.1.4 Type of sling(s) as designated by the symbols depictedin Table 7, if possible,5.1.5 Quantity ordered,5.1.6 Reach of sling(s),5.1.7 Sling angle, and5.1.8 Certification of proof test(s), if required.6. M
19、anufacture6.1 Assembly:6.1.1 Only component parts compatible with alloy chainshall be used.6.1.2 Slings assembled by welding shall be fabricated by theelectric or gas welding process, or both.6.1.3 Mechanically assembled slings shall be assembled inaccordance with component manufacturers recommendat
20、ions.6.1.4 Components shall be assembled so as to ensure freearticulation of the sling.7. Mechanical Requirements7.1 Proof Test:7.1.1 All components of a sling, either individually or as anassembly, shall be proof tested as required in 7.1.2 7.1.4.7.1.2 The proof test load for single leg slings and
21、compo-nents attached to single legs shall be twice the working loadlimit for the size and grade chain.7.1.3 The proof test load for components attached to twolegs of a sling shall be four times the working load limit for thesize and grade chain.7.1.4 The proof test load for components attached to th
22、ree orfour legs of a sling shall be six times the working load limit forthe size and grade chain.7.1.5 All sling components shall withstand the proof testload without loss of integrity or detrimental dimensionalchanges. Components that do not withstand the proof test shallbe discarded.FIG. 1 Chain S
23、ling Major ComponentsTABLE 1 Chain and Single Leg Grade 80 Sling WLL DataGrade 80 Chain Size Single Leg WLL (max)in. mm lb kg732 5.5 2100 950932 7 3500 1600516 8 4500 200038 10 7100 320012 13 12 000 540058 16 18 100 820034 20 28 300 12 80078 22 34 200 15 5001 26 47 700 21 600114 32 72 300 32 800A906
24、/A906M 02 (2016)28. Tolerances8.1 When constructing the sling, a tolerance of 0 + 2 linksis permissible on the nominal reach ordered by a purchaser. Inthe completed sling, the difference between the longest andshortest legs of a multi-leg sling shall not exceed516 in. 8 mmfor legs up to 612 ft 2 m i
25、n length. For slings in excess of612 ft 2 m, the difference between the longest and shortestlegs may be increased by532 in. 4 mm for each additional314 ft 1 m.TABLE 2 Double Leg and Single Basket Grade 80 Alloy Chain Sling WLL Data at 60, 45, and 30 Sling AnglesNOTE 1WLL (double leg)=2xWLL(single le
26、g) x sin Grade 80 Chain SizeWLL at Sling Angle of60 45 30in.m lbkglbkglbkg732 5.5 3600 1650 3000 1350 2100 950932 7 6100 2750 4900 2250 3500 1600516 8 7800 3550 6400 2900 4500 200038 10 12 300 5500 10 000 4500 7100 320012 13 20 800 9450 17 000 7700 12 000 540058 16 31 300 14 200 25 600 11 600 18 100
27、 820034 20 49 000 22 250 40 000 18 150 28 300 12 80078 22 59 200 26 850 48 400 21 900 34 200 15 5001 26 82 600 37 500 67 400 30 600 47 700 21 600114 32 125 200 56 800 102 200 46 400 72 300 32 800TABLE 3 Triple and Quadruple Leg and Double Basket Grade 80 Alloy Chain Sling WLL Data at 60, 45, and 30
28、Sling AnglesNOTE 1 WLL (3 or 4 leg)=3xWLL(single leg) x sin Grade 80 Chain SizeWLL at Sling Angle of60 45 30in.m lbkglbkglbkg732 5.5 5500 2450 4400 2000 3200 1450932 7 9100 4150 7400 3400 5200 2400516 8 11 700 5350 9500 4350 6800 310038 10 18 400 8300 15 100 6800 10 600 480012 13 31 200 14 150 25 50
29、0 11 550 18 000 820058 16 47 000 21 300 38 400 17 400 27 100 12 30034 20 73 500 33 400 60 000 27 250 42 400 19 30078 22 88 900 40 250 72 500 32 900 51 300 23 2501 26 123 900 56 250 101 200 45 950 71 500 32 500114 32 187 800 85 200 153 400 69 600 108 400 49 200A906/A906M 02 (2016)39. Working Load Lim
30、it (WLL)9.1 Working Load LimitThe working load limits given inTables 1-6 are for symmetrically loaded slings manufacturedwith components of equal or higher working load limits thanthe chain.9.2 Slings containing any Grade 80 component shall berated at Grade 80 working load limits.9.3 Working load li
31、mits shall conform to the values shownin Tables 1-3 for Grade 80 slings and Tables 4-6 for Grade 100slings.NOTE 1The working load limit values in Tables 1-6 have beenrounded to the nearest 100 lb 50 kg.NOTE 2Rigging and hitch conditions may lower the working loadlimit of the sling.9.4 Working load l
32、imits for sling angles not listed in Tables1-6 shall be calculated as follows:9.4.1 The working load limit for double leg and singlebasket slings=2single leg sling working load limit sine ofhorizontal angle.9.4.2 The working load limit for triple and quadruple legand double basket slings=3chain sing
33、le leg sling workingload limit sine of horizontal angle.9.4.3 Nominal RatingThe nominal rating of any multi-branch sling shall be the working load limit for that sling whenapplied at an angle of 60 from the horizontal.10. Workmanship, Finish, and Appearance10.1 The manufacturer may apply a surface t
34、reatment orcoating of his own choice for identification or corrosionresistance unless the customer specifies otherwise.11. Certification11.1 A manufacturers certification of proof test shall befurnished, if requested. The certificate shall include the infor-mation on the tag, the proof load, and dat
35、e of issue.11.2 For mechanically assembled slings, the appropriatecertification of sling component parts shall be made availableto the user if requested.12. Product Marking12.1 Identification TagThere shall be an identification tagpermanently affixed to each sling chain bearing the followinginformat
36、ion:12.1.1 Size,12.1.2 Length (reach),12.1.3 Working load limit and angle upon which it is based,12.1.4 Serial number,12.1.5 Manufacturers name or symbol, and chain grade,and12.1.6 Sling type (number of legs) as described in Table 7.13. Keywords13.1 chain; steel chainTABLE 4 Chain and Single Leg Gra
37、de 100 Sling WLL DataGrade 100 Chain Size Single Leg WLL (max)in. mm lb kg732 5.5 2700 1200932 7 4300 1950516 8 5700 260038 10 8800 400012 13 15 000 680058 16 22 600 10 30034 20 35 300 16 00078 22 42 700 19 400A906/A906M 02 (2016)4TABLE 5 Double Leg and Single Basket Grade 100 Alloy Chain Sling WLL
38、Data at 60, 45, and 30 Sling AnglesNOTE 1WLL (double leg)=2WLL(single leg) sin .Grade 100 Chain SizeWLL at Sling Angle of60 45 30in.m lbkglbkglbkg732 5.5 4700 2150 3800 1750 2700 1200932 7 7400 3400 6100 2750 4300 1950516 8 9900 4500 8100 3700 5700 260038 10 15 200 6950 12 400 5650 8800 400012 13 26
39、 000 11 800 21 200 9600 15 000 680058 16 39 100 17 750 32 000 14 500 22 600 10 30034 20 61 100 27 700 49 900 22 650 35 300 16 00078 22 74 000 33 500 60 400 27 350 42 700 19 400TABLE 6 Triple and Quadruple Leg and Double Basket Grade 100 Alloy Chain Sling WLL Data at 60, 45, and 30 Sling AnglesNOTE 1
40、WLL (3 or 4 leg)=3WLL(single leg) sin .Grade 100 Chain SizeWLL at Sling Angle of60 45 30in.m lbkglbkglbkg732 5.5 7000 3250 5700 2650 4000 1900932 7 11 200 5050 9100 4150 6400 2950516 8 14 800 6750 12 100 5500 8500 390038 10 22 900 10 400 18 700 8500 13 200 600012 13 39 000 17 650 31 800 14 450 22 50
41、0 10 20058 16 58 700 26 650 47 900 21 750 33 900 15 40034 20 91 700 41 550 74 900 33 950 53 000 24 00078 22 110 900 50 250 90 600 41 050 64 000 29 050A906/A906M 02 (2016)5ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedi
42、n this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and mu
43、st be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of th
44、eresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C70
45、0, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permissio
46、n rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 7 Sling DesignationNOTE 1This table is not complete in that manufacturers employspecial designations for special, miscellaneous, and adjustabl
47、e sling styles.First Symbol (Basic Sling Type)Second Symbol(Upper End Fitting)ASymbol Description Symbol DescriptionS Single Leg O Oblong Master LinkC Single Choker with MasterLinksno hooksP Pear Shaped Master LinkD Double Leg S Sling HookT Triple Leg G Grab HookQ Quadruple Leg F Foundry HookSB Sing
48、le BasketDB Double BasketThird Symbol (End (Terminal) Fitting(s)Symbol DescriptionS Sling HookG Grab HookF Foundry HookAThe absence of a designation in the second symbol position indicates no topfitting present. Such would be the case in a single leg with grab hook at one enddesignated SG.A906/A906M 02 (2016)6
