ASTM A805-93(1998)

Standard Specification for Steel, Flat Wire, Carbon, Cold-Rolled

SCOPE
1.1 This specification covers carbon steel flat wire in coils or cut lengths. Flat wire is classified as a cold-rolled section, rectangular in shape, 0.500 in. (12.7 mm) or less in width and under 0.250 in. (6.35 mm) in thickness.  
1.2 Low-carbon steel flat wire is produced from steel compositions with a maximum carbon content of 0.25% by cast or heat analysis.  
1.3 Carbon spring steel flat wire is produced to a carbon range in which the specified or required maximum is over 0.25% by cast or heat analysis.  
1.3.1 Two types of carbon spring steel flat wire are produced:
1.3.1.1 Untempered cold-rolled carbon spring steel flat wire, produced to several desirable combinations of properties and  
1.3.1.2 Hardened and tempered carbon spring steel wire.  
1.4 Definite application flat wire is a product developed for a specific application and may be specified only by size and descriptive name.

General Information

• Status: Historical
• Publication Date: 09-Sep-1998
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.19 - Steel Sheet and Strip

Relations

• Replaced By: ASTM A805-93(2002) - Standard Specification for Steel, Flat Wire, Carbon, Cold-Rolled
• Effective Date: 10-Nov-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 805 – 93 (Reapproved 1998)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
1
Steel, Flat Wire, Carbon, Cold-Rolled
This standard is issued under the fixed designation A 805; 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 2.3 Federal Standard:
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
1.1 This specification covers carbon steel flat wire in coils
2.4 SAE Standard:
or cut lengths. Flat wire is classified as a cold-rolled section,
Recommended Practice SAEJ 419 Methods of Measuring
rectangular in shape, 0.500 in. (12.7 mm) or less in width and
5
Decarburization
under 0.250 in. (6.35 mm) in thickness.
1.2 Low-carbon steel flat wire is produced from steel
3. Terminology
compositions with a maximum carbon content of 0.25 % by
3.1 Definitions of Terms Specific to This Standard: Descrip-
cast or heat analysis.
tions of Terms Specific to This Standard:
1.3 Carbon spring steel flat wire is produced to a carbon
3.1.1 annealing—the process of heating to and holding at a
range in which the specified or required maximum is over
suitable temperature and then cooling at a suitable rate, for
0.25 % by cast or heat analysis.
such purposes as reducing hardness, facilitating cold working,
1.3.1 Two types of carbon spring steel flat wire are pro-
producing a desired microstructure, or obtaining desired me-
duced:
chanical, physical, or other properties.
1.3.1.1 Untempered cold-rolled carbon spring steel flat
3.1.2 batch annealing—annealing that is generally per-
wire, produced to several desirable combinations of properties
formed in large cylindrical bell type or large rectangular box or
and
car-type furnaces. The product is protected from scaling and
1.3.1.2 Hardened and tempered carbon spring steel wire.
decarburization by the use of a controlled atmosphere that
1.4 Definite application flat wire is a product developed for
envelops the charge in an inner chamber sealed to prevent the
a specific application and may be specified only by size and
influx of air or products of combustion. The coils
descriptive name.
or bundles are heated to a temperature in the vicinity of the
2. Referenced Documents lower critical temperature for the grade of steel, and held at that
temperature for a definite length of time; after which the steel
2.1 ASTM Standards:
is allowed to cool slowly to room temperature. The time of
A 370 Test Methods and Definitions for Mechanical Testing
2
holding at the annealing temperature varies with the grade of
of Steel Products
the steel and the desired degree of softness.
A 510 Specification for General Requirements for Wire
2
3.1.3 continuous or strand annealing—annealing that con-
Rods and Coarse Round Wire, Carbon Steel
sists of passing a number of individual strands of flat wire
A 751 Test Methods, Practices and Terminology for Chemi-
2
continuously through either a muffle furnace or a bath of
cal Analysis of Steel Products
molten lead or salt, thus heating the flat wire to the desired
E 45 Practice for Determining the Inclusion Content of
3
temperature for a definite time. The hardness obtained by this
Steel
3 type of annealing, as measured by Rockwell hardness number,
E 112 Test Methods for Determining Average Grain Size
3
is normally somewhat higher than is secured by batch-type
E 140 Hardness Conversion Tables for Metals
annealing. Other characteristics peculiar to strand–annealed
2.2 Military Standards:
4
steel require this type of annealing for some flat wire products.
MIL-STD-129 Marking for Shipment and Storage
3.1.4 salt annealing—annealing that is accomplished by
MIL-STD-163 Steel Mill Products, Preparation for Ship-
4
immersing bundles or coils of flat wire in a molten salt bath at
ment and Storage
a desired temperature for a definite time. Following the
annealing, the coils are permitted to cool slowly, after which
1
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
they are immersed in hot water to remove any adhering salts.
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
3.1.5 spheroidize annealing—an operation consisting of
A01.19 on Sheet Steel and Strip.
prolonged heating and prolonged cooling cycles to produce a
Current edition approved June 15, 1993. Published August 1993. Originally
published as A 805 – 82. Last previous edition A 805 – 91.
2
Annual Book of ASTM Standards, Vol 01.03.
3
Annual Book of ASTM Standards, Vol 03.01.
4 5
Available from Standardization Documen
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