Standard Specification for Free-Machining Stainless Steel Bars

ABSTRACT
This specification covers hot-finished or cold-finished bars, except bars for forging, suitable for machining processes. It includes rounds, squares, and hexagons in the more commonly used types of stainless free-machining steels designed especially for optimum machinability and for general corrosion and high-temperature service. Bars may be furnished either hot finished or cold finished in one of the conditions specified. Materials shall adhere to specified chemical composition requirements. At least one hardness testing shall be made midway between surface and center on each lot to determine that the material conforms to hardness requirements. Also, test methods and definition for hardness testing are presented.
SCOPE
1.1 This specification covers hot-finished or cold-finished bars, except bars for forging (Note 1). It includes rounds, squares, and hexagons in the more commonly used types of stainless free-machining steels designed especially for optimum machinability and for general corrosion and high-temperature service. Stainless steel bars other (Note 2) than the free-machining types are covered in a separate specification.
1.2 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard: within the text and tables, the SI uits are shown in [brackets]. The values stated in each system are not exact equivalents: therefore, each system must be used independent 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.
Note 1—For bars for reforging, see Specification A314.
Note 2—For non-free machining stainless bars, see Specification A276.

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ASTM A582/A582M-05 - Standard Specification for Free-Machining Stainless Steel Bars
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A582/A582M – 05
Standard Specification for
1
Free-Machining Stainless Steel Bars
This standard is issued under the fixed designationA582/A582M; 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* A751 Test Methods, Practices, andTerminology for Chemi-
cal Analysis of Steel Products
1.1 This specification covers hot-finished or cold-finished
A959 Guide for Specifying Harmonized Standard Grade
bars, except bars for forging (Note 1), suitable for machining
Compositions for Wrought Stainless Steels
processes. It includes rounds, squares, and hexagons in the
E527 Practice for Numbering Metals and Alloys in the
more commonly used types of stainless free-machining steels
Unified Numbering System (UNS)
designed especially for optimum machinability and for general
3
2.2 SAE Document:
corrosion and high-temperature service. Stainless steel bars
SAE J 1086 Recommended Practice for Numbering Metals
other than the free-machining types are covered in a separate
3
and Alloys
specification (Note 2).
1.2 This specification is expressed in both inch-pound units
3. Ordering Information
and in SI units; however, unless the purchase order or contract
3.1 It is the responsibility of the purchaser to specify all
specifies the applicable M specification designation (SI units),
requirements that are necessary for product ordered under this
the inch-pound units shall apply. The values stated in either
specification. Such requirements to be considered include, but
inch-pound units or SI (metric) units are to be regarded
are not limited to, the following:
separately as standard: within the text and tables, the SI units
3.1.1 Quantity (weight or number of pieces),
are shown in [brackets]. The values stated in each system may
3.1.2 Type or UNS designation (Table 1),
not be exact equivalents: therefore, each system shall be used
3.1.3 Form (bars, angles, etc.),
independently of the other. Combining values from the two
3.1.4 Condition (Table 2),
systems may result in nonconformance with the specification.
3.1.5 Finish (5.1),
NOTE 1—For bars for reforging, see Specification A314.
3.1.6 Applicable dimensions, including size, thickness,
NOTE 2—For non-free machining stainless bars, see Specification
width, and length,
A276.
3.1.7 Cross section (round, square, etc.),
3.1.8 ASTM designation (Specification A582/A 582M) and
2. Referenced Documents
publication date,
2
2.1 ASTM Standards:
3.1.9 Preparation for delivery, and
A276 Specification for Stainless Steel Bars and Shapes
3.1.10 Marking requirements.
A314 Specification for Stainless Steel Billets and Bars for
Forging NOTE 3—Atypicalorderingdescriptionisasfollows:5000lb[2000kg]
1
Type416bars,annealedandcenterlessground,1 ⁄2 in.[40mm]round,10
A370 Test Methods and Definitions for Mechanical Testing
to 12 ft [3 to 4 m] in length, ASTM Specification A582/A582Mdated.
of Steel Products
4. General Requirements for Delivery
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, 4.1 Product furnished to this specification shall conform to
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
the requirements of Specification A751, including any supple-
A01.17 on Flat-Rolled and Wrought Stainless Steel.
mentary requirements indicated in the purchase order or
Current edition approved March 1, 2005. Published March 2005. Originally
contract. Failure to comply with the general requirements of
approved in 1967. Last previous edition approved in 2000 as A582/A582M – 95b
´1
(2000) . DOI: 10.1520/A0582_A0582M-05.
Specification A751 constitutes nonconformance with this
2
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
3
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.
*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.
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A582/A582M – 05
TABLE 1 Chemical Requirements
Chemical Composition, %
UNS
Desig- Type
Manga- Phos- Silicon, Molyb- Other
B B
A
Carbon Sulfur Chromium Nickel Selenium
B B
nation
nese phorus, max denum Elements
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
...

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