ASTM A996/A996M-03a

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Designation: A 996/A 996M – 03a
Standard Specification for Rail-Steel and Axle-Steel
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Deformed Bars for Concrete Reinforcement
This standard is issued under the fixed designation A 996/A 996M; 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* A 370 Test Methods and Definitions for Mechanical Testing
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of Steel Products
1.1 This specification covers rail-steel and axle-steel bars
A 700 Practices for Packaging, Marking, and Loading
for concrete reinforcement. Three types of product are in-
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Methods for Steel Products for Domestic Shipment
cluded, designated with a “rail symbol,” and an “R” for bars
E 29 Practice for Using Significant Digits in Test Data to
made of rail-steel and with an “A” for bars made of axle-steel.
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Determine Conformance with Specifications
The standard sizes and dimensions of deformed bars and their
2.2 Military Standards:
number designations are given in Table 1. All sizes and grades
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MIL-STD-129 Marking for Shipment and Storage
of all types may not be readily available; manufacturers should
MIL-STD-163 Steel Mill Products Preparation for Ship-
be consulted to verify availability.
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ment and Storage
1.2 The text of this specification references notes and
2.3 Federal Standard:
footnotes that provide explanatory material. These notes and
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
footnotes, excluding those in tables and figures, shall not be
considered as requirements of the specification.
3. Terminology
1.3 Type “rail symbol” and Type R are of two minimum
3.1 Definitions of Terms Specific to This Standard:
yield levels, namely 50 000 psi [350 MPa] and 60 000 psi [420
3.1.1 deformed bar, n—steel bar with protrusions; a bar that
MPa] designated as Grade 50 [350] and Grade 60 [420],
is intended for use as reinforcement in reinforced concrete
respectively. Type A is of two minimum yield levels, namely
construction.
40 000 psi [280 MPa] and 60 000 psi [420 MPa] designated as
3.1.1.1 Discussion—The surface of the bar is provided with
Grade 40 [280] and Grade 60 [420], respectively.
lugs or protrusions that inhibit longitudinal movement of the
1.4 The weldability of the steel is not a requirement of this
bar relative to the concrete surrounding the bar in such
specification.
construction. The lugs or protrusions conform to the provisions
1.5 This specification is applicable for orders in either
of this specification.
inch-pound units (Specification A 996) or SI units (Specifica-
3.1.2 deformations, n—protrusions on a deformed bar.
tion A 996M).
3.1.3 rib, n—longitudinal protrusion on a deformed bar.
1.6 The values stated in either inch-pound units or SI units
are to be regarded as standard. Within the text, the SI units are
4. Ordering Information
shown in brackets. The values stated must be used indepen-
4.1 It shall be the responsibility of the purchaser to specify
dently of the other. Combining values from the two systems
all requirements that are necessary for material ordered to this
may result in nonconformance with the specification.
specification. Such requirements shall include, but are not
1.7 This standard does not purport to address all of the
limited to, the following.
safety concerns, if any, associated with its use. It is the
4.1.1 Quantity (weight) [mass],
responsibility of the user of this standard to establish appro-
4.1.2 Name of material (rail-steel or axle-steel deformed
priate safety and health practices and determine the applica-
bars for concrete reinforcement),
bility of regulatory limitations prior to use.
4.1.3 Type,
4.1.4 Size,
2. Referenced Documents
4.1.5 Grade,
2.1 ASTM Standards:
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, Annual Book of ASTM Standards, Vol 01.01.
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Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 01.05.
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A01.05 on Steel Reinforcement. Annual Book of ASTM Standards, Vol 14.02.
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Current edition approved June 10, 2003. Published July 2003. Originally Available from Standardization Documents Order Desk, Bldg. 4, Section D,
approved in 1998. Last previous edition approved in 2003 as A 996/A 996M-03. 700 Robbins Ave., Philadelphia, PA 19111–5094.
*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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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org
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