ASTM A679/A679M-00

Standard Specification for Steel Wire, High Tensile Strength, Cold Drawn

SCOPE
1.1 This specification covers round, uncoated, high tensile strength, hard-drawn steel spring wire, having properties and quality suitable for the manufacture of mechanical springs and wire forms subject to high static stresses or infrequent dynamic load, or both.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other.

General Information

• Status: Historical
• Publication Date: 09-Apr-2000
• ICS: 77.140.65 - Steel wire, wire ropes and link chains
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.03 - Steel Rod and Wire

Relations

• Replaced By: ASTM A679/A679M-06 - Standard Specification for Steel Wire, High Tensile Strength, Cold Drawn
• Effective Date: 01-May-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 679/A 679M – 00
Standard Specification for
Steel Wire, High Tensile Strength, Cold Drawn
This standard is issued under the fixed designationA679/A679M; 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.
1. Scope 2.4 Military Standard:
MIL-STD-163 Steel Mill Products, Preparation for Ship-
1.1 This specification covers round, uncoated, high tensile
ment and Storage
strength, cold-drawn steel spring wire, having properties and
2.5 AIAG Standard:
quality suitable for the manufacture of mechanical springs and
AIAGB-5 02.00 Primary Metals Identification TagApplica-
wire forms subject to high static stresses or infrequent dynamic
tion Standard
load, or both.
1.2 The values stated in either SI units or inch-pound units
3. Terminology
are to be regarded separately as standard. The values stated in
3.1 Definitions—For definitions of terms used in this speci-
each system are not exact equivalents; therefore, each system
fication, refer to Terminology A 941.
must be used independently of the other.
4. Ordering Information
2. Referenced Documents
4.1 It shall be the responsibility of the purchaser to specify
2.1 ASTM Standards:
all requirements that are necessary for material under this
A 370 Test Methods and Definitions for MechanicalTesting
specification. Such requirements may include, but are not
of Steel Products
limited to, the following:
A 510 Specification for General Requirements for Wire
4.1.1 Quantity (mass),
Rods and Coarse Round Wire, Carbon Steel
4.1.2 Name of material (steel wire, high tensile strength,
A 510M Specification for General Requirements for Wire
hard drawn),
Rods and Coarse Round Wire, Carbon Steel [Metric]
4.1.3 Dimensions (Table 1 and Section 9),
A 700 Practices for Packaging, Marking, and Loading
4.1.4 Packaging (Section 15),
Methods for Steel Products for Domestic Shipment
4.1.5 Heat analysis report, if requested (6.2),
A 751 Test Methods, Practices, and Terminology for
4.1.6 Certification or test report, or both, if specified (Sec-
Chemical Analysis of Steel Products
tion 14), and
A 941 Terminology Relating to Steel, Stainless Steel, Re-
4 4.1.7 ASTM designation and year of issue.
lated Alloys, and Ferroalloys
E 29 Practice for Using Significant Digits in Test Data to
NOTE 1—A typical ordering description is as follows: 20 Mg high
Determine Conformance with Specifications tensile strength, hard-drawn steel mechanical spring wire, 5.00-mm
diameter, 500-kg coils to ASTM A 679/A 679M dated ____ , or for
2.2 ANSI Standard:
inch-pound units, 40,000-lb high tensile strength, hard-drawn steel me-
B32.4 Preferred Metric Sizes for Round, Square, Rectangle,
chanical spring wire, 0.192-in. diameter, in 1000-lb coils to ASTM
and Hexagon Metal Products
A 679/A 679M dated ____ .
2.3 Federal Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
5. Materials and Manufacture
5.1 The steel may be made by any commercially accepted
steel making process. The steel may be either ingot cast or
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
continuous strand cast. The rod to be used in the manufacture
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
of wire furnished to this specification shall be in accordance
A01.03 on Steel Rod and Wire.
with Specification A 510 or A 510M.
Current edition approved April 10, 2000. Published June 2000. Originally
published as A 679 – 73. Last previous edition A 679/A 679M – 93. 5.2 The finished wire shall be free from detrimental pipe
Annual Book of ASTM Standards, Vol 01.03.
and undue segregation.
Annual Book of ASTM Standards, Vol 01.05.
5.3 The wire shall be cold drawn to produce the desired
Annual Book of ASTM Standards, Vol 01.01.
mechanical properties.
Annual Book of ASTM Standards, Vol 14.02.
Available from American National Standards Institute, 11 West 42nd Street,
13th Floor, New York, NY 10036.
7 8
AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700 Available from the Automotive Industry Action Group, 26200 Lahser, Suite
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Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 679/A 679M – 00
TABLE 1 Tensile Requirements
7.1.1 Requirements— The material as represented by ten-
SI Units Inch-Pound Units sion test specimens shall conform to the requirements pre-
scribed in Table 1.
Tensile Strength, MPa Tensile Strength, ksi
Diameter,
Diameter, in.
A,B
mm 7.1.2 Number of Tests— One test specimen shall be taken
min max min max
for each 10 coils or fraction thereof, in a lot. Each heat in a
0.50 2400 2650 0.020 350 387
0.55 2380 2620 0.023 343 380 given lot shall be tested.
0.60 2350 2600 0.026 337 373
7.1.3 Test Method— The tension test shall be made in
0.65 2320 2580 0.029 331 366
accordance with Test Methods and Definitions A 370.
0.70 2300 2550 0.032 327 361
0.80 2250 2500 0.035 322 356
7.2 Wrap Test:
0.90 2200 2450 0.041 314 347
1.00 2150 2400 0.048 306 339 7.2.1 Requirements— The material as represented by the
1.10 2120 2380 0.054 300 331
wrap test specimens shall conform to the requirements speci-
1.20 2100 2350 0.062 293 324
fied in Table 3.
1.40 2050 2300 0.072 287 317
1.60 2000 2250 0.080 282 312
7.2.2 Number of Tests— One test specimen shall be taken
1.80 1980 2220 0.092 275 304
for each 10 coils, or fraction thereof, in a lot. Each heat in a
2.00 1950 2200 0.106 268 296
given lot shall be tested.
2.20 1900 2150 0.120 263 290
2.50 1850 2100 0.135 258 285
7.2.3 Location of Test— Test specimens shall be taken from
2.80 1820 2050 0.148 253 279
either end of the coil.
3.00 1800 2000 0.162 249 275
3.50 1750 1950 0.177 245 270
7.2.4 Test Method— The wrap test shall be made in accor-
4.00 1700 1900 0.1927 241 267
dance with Test Methods and Definitions A 370.
4.50 1680 1880 0.207 238 264
5.00 1650 1850
A
8. Metallurgical Requirements
Tensile strength values for intermediate diameters shall be interpolated.
B
Preferred sizes. For a complete list, refer to ANSI B32.4
8.1 Microstructure—The wire shall be cold drawn with a
fine pearlite structure.
5.4 The wire finish shall be suitable for forming or coiling.
8.2 Surface Conditions—The wire surface shall not exhibit
It is not intended that this material be furnished with a metallic
imperfections that exceed 3.5 % of the wire diameter or 0.25
coating.
mm (0.010 in.) in depth, whichever is smaller.
6. Chemical Composition
9. Dimensions and Permissible Variations
6.1 Thesteelsha
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