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Document ASTM A 955/A 955M REV A is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
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ASTM A 955/A 955M REV A Document Information:
Title
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
ASTM International
Publication Date:
Jul 15, 2007
Scope:
This specification covers deformed and plain stainless-steel
bars for concrete reinforcement used in applications requiring
resistance to corrosion or controlled magnetic permeability. The
standard sizes and dimensions of deformed bars and their numerical
designation shall be those listed in Table 1. The text of this
specification references notes and footnotes which provide
explanatory material. These notes and footnotes (excluding those in
tables and figures) shall not be considered as requirements of the
specification.
Supplementary requirement (S1) of an optional nature is
provided. It shall apply only when specified by the purchaser. In
order to obtain a controlled magnetic permeability product, steel
conforming to Supplementary Requirement S1 should be ordered.
The chemical composition of the stainless steel alloy shall be
selected for suitability to the application involved by agreement
between the manufacturer and the purchaser. This is an important
consideration in achieving the desired corrosion resistance and/or
controlled magnetic permeability because these properties are not
provided by all stainless steels.
NOTE 1—The alloys shown in Table 2 have found the most use in
North America. Other alloys may also provide desired properties;
consult with the manufacturer for stainless steel alloy properties
and availability.
Bars are of three minimum yield strength levels, namely, 40 000
[280 MPa], 60 000 [420 MPa], and 75 000 psi [520 MPa], designated
as Grade 40 [280], Grade 60 [420], and Grade 75 [520],
respectively.
Plain rounds in sizes up to and including 2 in. [50.8 mm] in
diameter, when specified for dowels, spirals, structural ties, and
supports, shall be furnished under this specification in Grade 40
[280], Grade 60 [420], and Grade 75 [520], respectively. Bending
properties, when required, shall be by agreement between the
manufacturer and purchaser. Requirements providing for deformations
and marking shall not be applicable to plain bars.
Weldability of most stainless steel compositions is generally
good, however, pre-weld or post-weld procedures, or both, are
necessary. Where material is to be welded, a welding procedure
suitable for the chemical composition and intended use or service
shall be used. Retesting of physical properties should be
considered following welding procedures depending upon the steel
composition and welding operation involved.
NOTE 2—It is recommended that the user consult the manufacturer
for information available from the Nickel Development Institute
(NIDI) (Toronto, Canada).
This specification is applicable for orders in either inch-pound
units (as Specification A 955) or in SI units (as Specification A
955M).
The values stated in either inch-pound or SI units are to be
regarded separately as standard. Within the text, the SI units are
shown in brackets. The values stated in each system are not exact
equivalents; therefore, each system shall be used independently of
the other. Combining values from the two systems may result in
nonconformance with the standard.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- concrete reinforcement
- corrosion resistance
- deformations (protrusions)
- magnetic properties
- stainless steel bars
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