ASTM A581/A581M-95b(2009)
(Specification)Standard Specification for Free-Machining Stainless Steel Wire and Wire Rods
Standard Specification for Free-Machining Stainless Steel Wire and Wire Rods
ABSTRACT
This specification covers the standard for cold-finished wire and hot-finished free-machining stainless steel wire and wire rods in coils. Chemical analysis shall be performed on the steel and shall conform to the chemical composition requirements in carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel and other trace elements. The stainless steel shall undergo mechanical testing and conform to the tensile strength requirement.
SCOPE
1.1 This specification covers cold-finished wire and hot-finished wire rods in coils. Wire rods are a semi-finished product primarily for the manufacture of wire. Wire includes rounds, squares, hexagons, and special shapes in the more commonly used types of stainless free-machining steels designed especially for optimum machinability and for general corrosion and high-temperature service.
Note 1—For wire other than those of the free-machining types, see Specification A 580/A 580M.
1.2 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standards; within the text and tables, the SI units are shown in [brackets]. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.3 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:A581/A581M −95b(Reapproved 2009)
Standard Specification for
Free-Machining Stainless Steel Wire and Wire Rods
This standard is issued under the fixed designationA581/A581M; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2.2 SAE Standard:
J 1086 Practice for Numbering Metals and Alloys (UNS)
1.1 This specification covers cold-finished wire and hot-
finished wire rods in coils. Wire rods are a semi-finished
3. Ordering Information
product primarily for the manufacture of wire. Wire includes
3.1 It is the responsibility of the purchaser to specify all
rounds, squares, hexagons, and special shapes in the more
requirements that are necessary for material ordered under this
commonly used types of stainless free-machining steels de-
specification. Such requirements may include, but are not
signed especially for optimum machinability and for general
limited to, the following:
corrosion and high-temperature service.
3.1.1 Quantity (weight),
NOTE 1—For wire other than those of the free-machining types, see
3.1.2 Name of material (stainless steel),
Specification A580/A580M.
3.1.3 Condition (see Section 5),
1.2 The values stated in either inch-pound units or SI
3.1.4 Finish (see Section 7),
(metric) units are to be regarded separately as standards; within
3.1.5 Applicable dimensions including size, thickness,
the text and tables, the SI units are shown in [brackets]. The
width, and length or coil diameter (inside or outside diameter),
values stated in each system are not exact equivalents;
and coil weights,
therefore,eachsystemmustbeusedindependentlyoftheother.
3.1.6 Cross section (round, square, etc.),
Combining values from the two systems may result in noncon-
3.1.7 Type or UNS designation (Table 1),
formance with the specification.
3.1.8 ASTM designation (Specification A581/A581M) and
1.3 Unless the order specifies the applicable “M” specifica- date of issue, and
tion designation, the material shall be furnished to the inch- 3.1.9 Exceptions to the specification or special require-
pound units. ments.
NOTE 2—Atypical ordering description is as follows: 5000 lb [2000 kg]
2. Referenced Documents
stainless steel wire, annealed, ⁄4 in. [6.5 mm] round, coils, Type 303,
ASTM Specification A581/A581M dated . End use: machined valve
2.1 ASTM Standards:
parts.
A555/A555M Specification for General Requirements for
Stainless Steel Wire and Wire Rods
4. Chemical Composition
A580/A580M Specification for Stainless Steel Wire
4.1 The steel shall conform to the requirements as to
A751 Test Methods, Practices, and Terminology for Chemi-
chemical composition specified in Table 1.
cal Analysis of Steel Products
E527 Practice for Numbering Metals and Alloys in the
4.2 Methods and practices relating to chemical analysis
Unified Numbering System (UNS)
required by this specification shall be in accordance with Test
Methods, Practices, and Terminology A751.
5. Condition
This specification is under the jurisdiction of ASTM Committee A01 on Steel, 5.1 Cold-finished wire may be furnished in one of the
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
conditions listed in Table 2.
A01.17 on Flat-Rolled and Wrought Stainless Steel.
Current edition approved May 1, 2009. Published June 2009. Originally 5.2 Wire rods may be furnished in the as-hot-rolled or
approved in 1967. Last previous edition approved in 2004 as A581/A581M – 95b
as-hot-rolled and annealed condition.
(2004). DOI: 10.1520/A0581_A0581M-95BR09.
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
Standards volume information, refer to the standard’s Document Summary page on Available from Society of Automotive Engineers (SAE), 400 Commonwealth
the ASTM website. Dr., Warrendale, PA 15096-0001, http://www.sae.org.
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A581/A581M−95b (2009)
TABLE 1 Chemical Requirements
Composition, %
UNS
Phos-
Desig- Type
Carbon, Manga-
B
A phorus, Sulfur Silicon, max Chromium Nickel Other Elements
B
nation
max nese
max
AUSTENITIC
S20300 XM-1 0.08 5.0–6.5 0.04 0.18–0.35 1.00 16.0–18.0 5.0–6.5 Cu 1.75–2.25
S30300 303 0.15 2.00 0.20 0.15 min 1.00 17.0–19.0 8.0–10.0 . . .
0.20
S30310 XM-5 0.15 2.5–4.5 0.20 0.25 min 1.00 17.0–19.0 7.0–10.0 . . .
S30323 303 Se 0.15 2.00 0.20 0.06 1.0
...
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