ASTM A108-03

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: A 108 – 03
Standard Specification for
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Steel Bar, Carbon and Alloy, Cold-Finished
This standard is issued under the fixed designation A 108; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope A 700 Specification for Packaging, Marking, and Loading
Methods for Steel Products for Domestic Shipment
1.1 This specification covers cold-finished carbon and alloy
E 45 Test Methods for Determining the Inclusion Content
steel bars produced in straight length and coil to chemical
of Steel
compositions. Cold-finished bars are suitable for heat treat-
E 112 Test Methods for Determining the Average Grain
ment, for machining into components, or for use in the
Size
as-finished condition as shafting, or in constructional applica-
E 381 Method of Macroetch Testing Steel Bars, Billets,
tions,orforothersimilarpurposes(Note1).Gradesofsteelare
Blooms, and Forgings
identified by grade numbers or by chemical composition.
E 527 Practice for Numbering Metals and Alloys (UNS)
NOTE 1—Aguide for the selection of steel bars is contained in Practice
E 1077 Test Method for Estimating the Depth of Decarbur-
A 400.
ization of Steel Specimens
1.2 Some end uses may require one or more of the available
E 29 Practice for Using Significant Digits in Test Data to
designations shown under Supplementary Requirements.
Determine Conformance with Specifications
Supplementary requirements shall apply only when specified
2.2 Other Documents:
individually by the purchaser.
SAE Handbook and SAE J1086 Recommended Practice for
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1.3 The values stated in inch-pound units are to be regarded
Numbering Metals and Alloys (UNS)
as the standard. The values given in parentheses are for
Federal Standard 66 C Steel, Chemical Composition and
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information only.
Hardenability
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ISS Steel Bar Product Guideline for Bar Steel
2. Referenced Documents
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3. Terminology
2.1 ASTM Standards:
A 29/A 29M SpecificationforSteelBars,CarbonandAlloy,
3.1 Definition:
Hot-Wrought. General Requirements for
3.1.1 product tolerance levels—cold-finished steel bar is
A 304 Specification for Carbon and Alloy Steel Bars Sub-
producedwithuptofour(4)increasinglytighttolerancelevels,
ject to End-Quench Hardenability Requirements
for the individual product characteristics, dependent on the
A 322 Specification for Steel Bars, Alloy, Standard Grades
method of manufacture necessary to meet purchaser-ordered
A 370 Test Methods and Definitions for MechanicalTesting
specification requirements. (Product Tolerance Level 1 is
of Steel Products
selected, unless otherwise specified by purchaser.)
A 400 Practice for Steel Bars, Selection Guide, Composi-
4. Ordering Information
tion, and Mechanical Properties
A 510 Specification for General Requirements for Wire
4.1 Orders for cold-finished steel bar to this specification
Rods and Coarse Round Wire, Carbon Steel
should include the following items to adequately describe the
A 576 Specification for Steel Bars, Carbon, Hot-Wrought,
material:
Special Quality
4.1.1 Name of material,
4.1.2 ASTM specification number and date of issue,
4.1.3 Chemical composition, grade designation or limits,
4.1.4 Silicon level, if required,
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
A01.15 on Bars.
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Current edition approved Nov. 1, 2003. Published December 2003. Originally Available from Society of Automotive Engineers (SAE), 400 Commonwealth
approved in 1926. Last previous edition approved in 1999 as A 108 – 99. Dr., Warrendale, PA 15096-0001.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or AvailablefromtheStandardizationDocumentsOrderDesk,Bldg.4,SectionD,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 700 Robbins Ave., Philadelphia, PA 19111-5094 Attn: NPODS.
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Standards volume information, refer to the standard’s Document Summary page on Available from American Iron and Steel Institute (AISI), 1101 17th St., NW,
the ASTM website. Suite 1300, Washington, DC 20036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A108–03
4.1.5 Additional machinability-enhancing elements (see 6.3 Heat Treatment:
Footnote F to Table 1 of Specification A 29A 29M), 6.3.1 Unless otherwise specified, the bars shall be furnished
4.1.6 Condition (Surface Roughness tolerances listed in as cold-finished. Plain Carbon Steels wit
...