ASTM A906/A906M-02

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Designation: A906/A906M – 02
Standard Specification for
Grade 80 and Grade 100 Alloy Steel Chain Slings for
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Overhead Lifting
This standard is issued under the fixed designationA906/A906M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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1. Scope* OSHA 1910.184
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ASME B30.9 Slings
1.1 This specification covers the requirements and method
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ASME B30.10 Hooks
of rating and testing for alloy chain slings. Slings shall be
assembledusingcomponentsmanufacturedinaccordancewith
3. Terminology
Specification A391/A391M for Grade 80 chain, A973/A973M
3.1 Definitions:
for Grade 100 chain, andA952/A952M for other components.
3.1.1 chain sling—an assembly consisting of alloy steel
This specification covers welded and mechanically assembled
chain or chains joined to suitable upper and lower fittings,
slings.
according to the provisions of this specification, for attaching
1.2 This specification does not cover slings used at elevated
loads to be lifted by a crane or lifting machine.
temperatures (above 400°F [200°C]), in harmful or corrosive
3.1.2 coupling link—a link fitted to the end of the chain to
environmental conditions or for applications such as nonsym-
connect to another component of the sling. See Fig. 1.
metrical legs or loading.
3.1.3 master coupling link (secondary or intermediate
1.3 This specification is a performance and assembly speci-
link)—a link used on three and four leg slings to connect the
fication. Other standards, such as OSHA 1910.184, AS-
legs to a master link. See Fig. 1.
MEB30.9,andASMEB30.10,applytotheuseoftheproducts
3.1.4 master link—a link used as the upper end component
in this specification.
of a chain sling and by means of which the sling is attached to
1.4 The values stated in either inch-pound units or SI units
a crane or other lifting machine. See Fig. 1.
shall be regarded separately as standard.Within the text, the SI
3.1.5 overhead lifting—that process of lifting which would
units are shown in brackets. The values stated in each system
elevateafreelysuspendedloadtosuchapositionthatdropping
are not exact equivalents; therefore each system shall be used
theloadwouldpresentapossibilityofbodilyinjuryorproperty
independently of the other, without combining values in any
damage.
way.
3.1.6 proof test—a term designating a quality control test
2. Referenced Documents applied to a sling or to components of a sling. It is the
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minimum force in pounds or newtons which the sling and
2.1 ASTM Standards:
components have withstood under a test in which a constantly
A391/A391M Specification for Grade 80Alloy Steel Chain
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increasing force has been applied in direct tension.
3.1.7 length (reach)—the distance from the bearing point of
A952/A952M Specification for Forged Grade 80 and Grade
the upper end fitting to the bearing point of the lower end
100 Steel Lifting Components and Welded Attachment
2 fitting. See Fig. 1.
Links
3.1.8 sling angle—that angle measured between the hori-
A973/A973M Specification for Grade 100 Alloy Steel
zontal plane and the leg (legs) of the sling. See Tables 1-3.
Chain
3.1.9 working load limit (WLL)—the maximum load which
2.2 Other Standards:
a sling is designed to support in direct tension without shock
loading at a designated sling angle of lift.
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This specification is under the jurisdiction ofASTM CommitteeA01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
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A01.27 on Steel Chain. AvailablefromOccupationalSafetyandHealthAdministration(OSHA),Office
Current edition approved May 10, 2002. Published June 2002. Originally oftheFederalRegisterNationalArchivesandRecordsAdministration,Washington,
published as A906–91. Last previous edition A906–99. DOI: 10.1520/ DC.
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A0906_A0906M-02. Available from American Society of Mechanical Engineers (ASME), 3 Park
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Annual Book of ASTM Standards, Vol 01.05. Ave., New York, NY 10016–5990.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A906/A906M – 02
FIG. 1 Chain Sling Major Components
TABLE 1 Chain and Single Leg Grade 80 Sling WLL Data
5.1.4 Typeofsling(s)asdesignatedbythesymbolsdepicted
in Table 7, if possible,
5.1.5 Quantity ordered,
5.1.6 Reach of sling(s),
5.1.7 Sling angle, and
5.1.8 Certification of proof test(s), if required.
6. Manufacture
6.1 Assembly:
6.1.1 Only component parts compatible with alloy chain
Grade 80 Chain Size Single Leg WLL (max)
shall be used.
in. mm lb kg
6.1.2 Slingsassembl
...