ASTM A996/A996M-00

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Designation: A 996/A 996M – 00
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 700 Practices for Packaging, Marking, and Loading
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Methods for Steel Products for Domestic Shipment
1.1 This specification covers rail-steel and axle-steel bars
E 29 Practice for Using Significant Digits in Test Data to
for concrete reinforcement. Three types of product are in-
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Determine Conformance with Specifications
cluded, designated with a “rail symbol,” and an “R” for bars
2.2 Military Standards:
made of rail-steel and with an “A” for bars made of axle-steel.
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MIL-STD-129 Marking for Shipment and Storage
The standard sizes and dimensions of deformed bars and their
MIL-STD-163 Steel Mill Products Preparation for Ship-
number designations are given in Table 1. All sizes and grades
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ment and Storage
of all types may not be readily available; manufacturers should
2.3 Federal Standard:
be consulted to verify availability.
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
1.2 The text of this specification references notes and
footnotes that provide explanatory material. These notes and
3. Terminology
footnotes, excluding those in tables and figures, shall not be
3.1 Definitions of Terms Specific to This Standard:
considered as requirements of the specification.
3.1.1 deformed bar, n—steel bar with protrusions; a bar that
1.3 Type “rail symbol” and Type R are of two minimum
is intended for use as reinforcement in reinforced concrete
yield levels, namely 50 000 psi [350 MPa] and 60 000 psi [420
construction.
MPa] designated as Grade 50 [350] and Grade 60 [420],
3.1.1.1 Discussion—The surface of the bar is provided with
respectively. Type A is of two minimum yield levels, namely
lugs or protrusions that inhibit longitudinal movement of the
40 000 psi [300 MPa] and 60 000 psi [420 MPa] designated
bar relative to the concrete surrounding the bar in such
Grade 40 [300] and Grade 60 [420].
construction. The lugs or protrusions conform to the provisions
1.4 The weldability of the steel is not a requirement of this
of this specification.
specification.
3.1.2 deformations, n—protrusions on a deformed bar.
1.5 This specification is applicable for orders in either
3.1.3 rib, n—longitudinal protrusion on a deformed bar.
inch-pound units (Specification A 996) or SI units (Specifica-
tion A 996M).
4. Ordering Information
1.6 The values stated in either inch-pound units or SI units
4.1 It shall be the responsibility of the purchaser to specify
are to be regarded as standard. Within the text, the SI units are
all requirements that are necessary for material ordered to this
shown in brackets. The values stated must be used indepen-
specification. Such requirements shall include, but are not
dently of the other. Combining values from the two systems
limited to, the following.
may result in nonconformance with the specification.
4.1.1 Quantity (weight) [mass],
1.7 This standard does not purport to address all of the
4.1.2 Name of material (rail-steel or axle-steel deformed
safety concerns, if any, associated with its use. It is the
bars for concrete reinforcement),
responsibility of the user of this standard to establish appro-
4.1.3 Type,
priate safety and health practices and determine the applica-
4.1.4 Size,
bility of regulatory limitations prior to use.
4.1.5 Grade,
2. Referenced Documents 4.1.6 Packaging (see Section 20),
4.1.7 ASTM designation and year of issue, and
2.1 ASTM Standards:
4.1.8 Certified mill test reports (if desired).
A 370 Test Methods and Definitions for Mechanical Testing
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of Steel Products
NOTE 1—A typical ordering description is as follows: 20 tons rail-steel
deformed bars for concrete reinforcement, Type R, No. 6, 30 ft 0 in. long,
Grade 60, in secured lifts, to ASTM A 996–________. Certified mill test
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This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
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A01.05 on Steel Reinforcement. Annual Book of ASTM Standards, Vol 01.05.
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Current edition approved January 10, 2000. Published April 2000. Originally Annual Book of ASTM Standards, Vol 14.02.
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published as A 996/A 996M-98. Last previous edition A 996/A 996M-98 Available from Standardization Documents Order Desk, Bldg. 4, Section D,
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Annual Book of ASTM Standards, Vol 01.01. 700 Robbins Ave., Philadelphia, PA 19111–5094.
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