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About This Item
Full Description
1.1 This specification covers deformed and plain stainless-steel bars for concrete reinforcement in cut lengths and coils 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.
1.1.1 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.
1.2 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 or controlled magnetic permeability, or both, 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.
1.3 Requirements for the relative deformation area of three-sided deformed bars are contained in Annex A4.
1.4 Bars are of two minimum yield strength levels, namely, 60 000 [420 MPa] and 75 000 psi [520 MPa], designated as Grade 60 [420] and Grade 75 [520], respectively.
1.5 Plain bars in sizes up to and including 2 in. [50.8 mm] in diameter in coils or cut lengths, when ordered, shall be furnished under this specification in 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.
1.6 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).
1.7 This specification is applicable for orders in either inch-pound units (as Specification A955) or in SI units (as Specification A955M).
1.8 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.
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Document History
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ASTM A955/A955M-20c
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Most Recent
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ASTM A955/A955M-20b
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-20a
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-20
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-19
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-18b
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-18a
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-18
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-17a
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-17
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Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-16a
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-16
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-15
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-14
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-12e1
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-12
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-11e1
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-11
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-10a
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-10
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-09b
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-09a
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-09
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-07a
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-07
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-06a
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-06
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-05a
Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-05
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-04ae1
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-04a
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-04
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-03b
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-03a
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-03
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-02
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version
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ASTM A955/A955M-01
Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement- Historical Version