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ASTM A368-95a(2004)

(Specification)

Standard Specification for Stainless Steel Wire Strand

Standard Specification for Stainless Steel Wire Strand

ABSTRACT
This specification covers the standard for stainless steel wire strand composed of a multiplicity of round wires and suitable for use as guy wires, overhead ground wires, and similar purposes. Stranding shall be sufficiently close to ensure no appreciable reduction in diameter when stressed to the specified strength. Several types of steel are covered like Type 302, 304, 305, 316, 316Cb, or 316Ti and shall conform to the required chemical composition values in carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, and nitrogen. The tensile strength, based upon the nominal strand diameter and the number of wires in each strand, shall conform to the minimum values in breaking strength. The individual wires of the completed strand shall not fracture when wrapped in a close helix of at least two turns upon itself as a mandrel.
SCOPE
1.1 This specification covers stainless steel wire strand composed of a multiplicity of round wires and suitable for use as guy wires, overhead ground wires, and similar purposes.  
1.2 The values stated in inch-pound units are to be regarded as the standard.

General Information

Status
Historical
Publication Date
31-Aug-2004
ICS
29.060.10 - Wires
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.17 - Flat-Rolled and Wrought Stainless Steel
Current Stage
Ref Project

Relations

Replaces
ASTM A368-95a(2000) - Standard Specification for Stainless Steel Wire Strand
Effective Date
01-Sep-2004
Replaced By
ASTM A368-95a(2009) - Standard Specification for Stainless Steel Wire Strand
Effective Date
01-May-2009
Referred By
ASTM A555/A555M-23 - Standard Specification for General Requirements for Stainless Steel Wire and Wire Rods
Effective Date
01-Sep-2004

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ASTM A368-95a(2004) - Standard Specification for Stainless Steel Wire StrandASTM A368-95a(2004) - Standard Specification for Stainless Steel Wire Strand
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ASTM A368-95a(2004) - Standard Specification for Stainless Steel Wire Strand
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 368 – 95a (Reapproved 2004)
Standard Specification for
Stainless Steel Wire Strand
This standard is issued under the fixed designation A 368; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
ASTM A 368 dated _____.
1. Scope
1.1 This specification covers stainless steel wire strand
4. General Requirements for Delivery
composed of a multiplicity of round wires and suitable for use
4.1 In addition to the requirements of this specification, all
as guy wires, overhead ground wires, and similar purposes.
requirements of the current edition of Specification A 555/
1.2 The values stated in inch-pound units are to be regarded
A 555M shall apply. Failure to comply with the general
as the standard.
requirements of Specification A 555/A 555M constitutes non-
conformance with this specification.
2. Referenced Documents
2.1 ASTM Standards:
5. Stranding
A 555/A 555M Specification for General Requirements for
5.1 Three-wire strand shall have a left lay with a uniform
Stainless Steel Wire and Wire Rods
pitch of not less than 10 nor more than 16 times the nominal
A 751 Test Methods, Practices, and Terminology for
diameter of the strand. Seven-wire strand and the outer layer of
Chemical Analysis of Steel Products
19-wire strand, shall have a left lay with a uniform pitch of not
lessthan12normorethan16timesthenominaldiameterofthe
3. Ordering Information
strand. A left lay is defined as a counter-clockwise twist away
3.1 It is the responsibility of the purchaser to specify all
from the observer. All wires shall be stranded with uniform
requirements that are necessary for material ordered under this
tension. Stranding shall be sufficiently close to ensure no
specification. Such requirements may include, but are not
appreciable reduction in diameter when stressed to 10 % of the
limited to, the following:
specified strength.
3.1.1 Quantity (length of strand or weight of quantity
5.2 All wires in the strand shall lie naturally in their true
ordered, or both; see 13.1 and Table 1),
positions in the completed strand, and when the strand is cut,
3.1.2 Name of material (stainless steel),
the ends shall remain in position or be readily replaced by hand
3.1.3 Form (wire strand in coils or on reels),
and then remain in position. This may be accomplished by any
3.1.4 Applicable dimensions (for nominal strand diameter,
means or process, such as preforming, post forming, or form
see Table 1),
setting.
3.1.5 Number of wires per strand (Table 1),
3.1.6 Minimum breaking strength (medium or high
6. Joints
strength),
6.1 There shall be no strand joints or strand splices in any
3.1.7 Type designation (see Section 7),
length of the completed strand.
3.1.8 ASTM designation, and date of issue, and
6.2 In3-wirestrand,thereshallbenojointsintheindividual
3.1.9 Special requirements, if any.
wires.
NOTE 1—Atypical ordering description is as follows: 1000 ft, stainless
6.3 In 7-wire strand, joints in individual wires shall be
steel 7-wire strand, ⁄16-in. diameter, medium strength, on reel, Type 302,
acceptable provided there is not more than one joint in any
150-ft (46-m) section of the completed strand and the location
1 of each wire joint is marked on the strand with paint or some
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
other distinguishing mark.
Stainless Steel and RelatedAlloys, and is the direct responsibility of Subcommittee
A01.17 on Flat-Rolled and Wrought Stainless Steel.
6.4 In 19-wire strand, joints in the individual wires of the
Current edition approved Sept. 1, 2004. Published September 2004. Originally
outer layer of 12 wires shall be acceptable provided there is not
approved in 1953. Last previous edition approved in 2000 as A 368 – 95a (2000).
more than one joint in any 150-ft (46-m) section and the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM location of each wire joint is marked on the strand with paint
Standards volume information, refer to the standard’s Document Summary page on
or some other distinguishing mark. Joints in the 7-wire inner
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 368 – 95a (2004)
TABLE 1 Mechanical Properties of Stainless Steel Wire Strand
Nominal Diameter Approximate Weight of Minimum Breaking Strength of Strand, lbf (kN)
Number of Wires Nominal Diameter
of Strand, Strand per 1000 ft
in Strand of Stainless Wires, in. (mm)
Medium Strength High Strength
in. (mm) (304.80 m), lb (kg)
⁄64 (5.16) 3 0.093 (2.36) 72 (32.66) 3 150 (14.01) 4 500 (20.02)
⁄32 (5.56) 3 0.104 (2.64) 90 (40.82) 3 950 (17.57) 5 650 (25.13)
⁄4 (6.35) 3 0.120 (3.05) 120 (54.43) 5 300 (23.58) 7 550 (33.58)
⁄16 (7.94) 3 0.145 (3.68) 175 (79.38) 7 700 (34.25) 11 000 (48.93)
⁄8 (9.52) 3 0.165 (4.19) 225 (102.06) 10 000 (44.48) 14 300 (63.61)
⁄32 (5.56) 7 0.072 (1.83) 100 (45.36) 4 500 (20.02) 6 300 (28.02)
⁄4 (6.35) 7 0.083 (2.11) 132 (59.87) 5 950 (26.47) 8 500 (37.81)
⁄32 (7.14) 7 0.093 (2.36) 167 (75.75) 7 350 (32.69) 10 500 (46.71)
⁄16 (7.94) 7 0.104 (2.64) 208 (94.35) 9 200 (40.92) 13 200 (58.72)
⁄8 (9.52) 7 0.120 (3.05) 278 (126.10) 12 500 (55.60) 18 000 (80.07)
⁄16 (11.11) 7 0.145 (3.68) 405 (183.71) 18 200 (80.96) 26 000 (115.65)
⁄2 (12.70) 7 0.165 (4.19) 525 (238.14) 23 600 (104.98) 33 700 (149.90)
⁄8 (9.52) 19 0.075 (1.90) 295 (133.81) 11 800 (52.49) 16 800 (74.73)
⁄16 (11.11) 19 0.087 (2.21) 400 (181.44) 15 800 (70.28) 22 500 (100.08)
⁄2 (12.70) 19 0.100 (2.54) 530 (240.40) 21 000 (93.41) 30 000 (133.45)
⁄16 (14.29) 19 0.110 (2.79) 640 (290.30) 25 400 (112.98) 36 200 (161.02)
⁄8 (15.88) 19 0.125 (3.18) 825 (374.21) 33 000 (146.79) 47 000 (209.07)
⁄4 (19.05) 19 0.150 (3.81) 1,190 (539.78) 47 500 (211.29) 67 500 (300.25)
⁄8 (22.22) 19 0.175 (4.44) 1,620 (734.82) 64 000 (284.69) 91 400 (406.57)
layerof19-wirestrandshallbeacceptableprovidedthereisnot 9. Dimensions, Ma
...

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1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.2.1 Exceptions—For conductor sizes designated by AWG or kcmil sizes, the requirements in SI units are numerically converted from the corresponding requirements in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or derived in SI units. For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.  
1.3 ACSS/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidal shaped wires (TW), or to reduce the diameter for a given area of aluminum. The conductors consist of a central core of round steel wire(s) surrounded by two or more layers of trapezoidal aluminum 1350-0 wires. Different strandings of the same size of conductor are identified by type, which is the approximate ratio of steel area to aluminum area expressed in percent (see Table 1, Table 2 and Table 3). For the purpose of this specification, the sizes listed in Table 1 and Table 2 are tabulated on the basis of the finished conductor having an area or outside diameter equal to that of specified sizes of standard ACSR, ACSS, and ACSR/TW so as to facilitate conductor selection.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
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    English language
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  • Technical specification
    7 pages
    English language
    sale 15% off