ASTM A973/A973M-01

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 973/A 973M – 01
Standard Specification for
1
Grade 100 Alloy Steel Chain
ThisstandardisissuedunderthefixeddesignationA973/A973M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Terminology
1.1 This specification covers Grade 100 heat-treated alloy 3.1 Definitions of Terms Specific to This Standard:
steel chain for such applications as slings, lifting assemblies, 3.1.1 breaking force, minimum—the minimum force in
and load binding. poundsornewtonsatwhichthechain,duringmanufacture,has
been found by testing to break when a constantly increasing
NOTE 1—This specification does not cover alloy steel chain for pocket
force is applied in direct tension. This test is a manufacturer’s
wheel applications.
attribute acceptance test and shall not be used as criteria for
1.2 This specification is a performance standard for Grade
service.
100 chain used between −20 and 400°F [−29 and 205°C]. The
3.1.2 lot—for the purpose of acceptance testing, a lot shall
chainmanufacturershouldbecontactedforuseattemperatures
consist of 3000 ft [1000 m], or fraction thereof, of the same
outside this range.
size chain. If a continuous length of chain exceeds 3000 ft
1.3 ThevaluesstatedineitherSIunitsorinotherunitsshall
[1000 m], it shall also be considered a lot.
be regarded separately as standard. The values stated in each
3.1.3 proof test—a quality control tensile test applied to
system may not be exact equivalents; therefore, each system
chain for the purpose of verifying weld and material quality. It
must be used independently of the other, without combining
is the minimum force in pounds or newtons which the chain
values in any way.
has withstood at the time it left the producer, under a test in
which a constantly increasing force has been applied in direct
2. Referenced Documents
tension to a straight length of chain. Proof test loads are a
2.1 ASTM Standards:
manufacturingintegritytestandshallnotbeusedascriteriafor
A29/A29M Specification for Steel Bars, Carbon and
service or design purposes.
Alloy, Hot-Wrought and Cold-Finished, General Require-
3.1.4 working load limit (WLL)—the maximum combined
2
ments for
static and dynamic load in pounds or kilograms that shall be
3
A919 Terminology Relating to Heat Treatment of Metals
applied in direct tension to an undamaged straight length of
E30 Test Methods for Chemical Analysis of Steel, Cast
chain.
4
Iron, Open-Hearth Iron, and Wrought Iron
E350 TestMethodsforChemicalAnalysisofCarbonSteel,
4. Ordering Information
Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and
4.1 It shall be the responsibility of the purchaser to specify
5
Wrought Iron
all requirements that are necessary for material ordered under
E415 Test Method for Optical Emission Vacuum Spectro-
this specification. Such requirements include, but are not
5
metric Analysis of Carbon and Low-Alloy Steel
limited to, the following:
2.2 SAE Standard:
4.1.1 Product to conform to Specification A973/A973M
SAE J422 Microscopic Determination of Inclusions in
and date of issue,
6
Steels
4.1.2 Nominal size of chain (in. or mm),
4.1.3 Quantity of chain (ft or m),
1 4.1.4 Length of each piece, if required,
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel,
4.1.5 Finish, if required,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
A01.27 on Steel Chain.
4.1.6 Certification of test(s), if required,
Current edition approved Sept. 10, 2001. Published November 2001. Originally
4.1.7 Acceptance of inspection by purchaser, if required,
published as A 973/A 973M-97. Last previous edition A 973/A 973M-00.
2
and
Annual Book of ASTM Standards, Vol 01.05.
3
Discontinued. See 1998 Annual Book of ASTM Standards, Vol 01.02. 4.1.8 Supplementary requirements, if required.
4
Discontinued. See 1995 Annual Book of ASTM Standards, Vol 03.05.
5
Annual Book of ASTM Standards, Vol 03.05.
6
Available from Society of Automotive Engineers, 400 Commonwealth Drive,
Warrendale, PA 15096.
*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.
1

---------------------- Page: 1 ----------------------
A 973/A 973M – 01
TABLE 2 Mechanical Test Sample Length Requirements
5. Manufacturing
Minimum Number of
5.1 Melting Process—The alloy steel shall be fully killed
Size of Chain Links
and have an austenitic grain size of five or finer.
in Test Specimen
5.2 Welding Process—Alloysteelchainmaybemadebythe
7
⁄32 in. [5.5 mm] 9
electric welding or gas welding process. 7
Larger tha
...