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ASTM A955/A955M-02

(Specification)

Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

SCOPE
1.1 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 . 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 and/or controlled magnetic permeability.
Note 1—The alloys shown in Table 2 have found the most use in North America. These and other stainless steel alloys specified in A 276 or other specifications are available for consideration in product selection. Consult with the steel manufacturer for stainless steel alloy availability.
1.3 Bars are generally of three minimum yield levels, namely, 40 000 [300 MPa], 60 000 [420 MPa], and 75 000 psi [520 MPa], designated as Grade 40 [300], Grade 60 [420], and Grade 75 [520], respectively.
1.4 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 [300], 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.
1.5 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).
1.6 This specification is applicable for orders in either inch-pound units (as Specification A 955) or in SI units (as Specification A 955M).
1.7 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.

General Information

Status
Historical
Publication Date
09-Nov-2002
ICS
77.140.60 - Steel bars and rods
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.05 - Steel Reinforcement
Current Stage
Ref Project

Relations

Replaces
ASTM A955/A955M-01 - Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement
Effective Date
10-Nov-2002
Replaced By
ASTM A955/A955M-03 - Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement
Effective Date
10-Apr-2003

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ASTM A955/A955M-02 - Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete ReinforcementASTM A955/A955M-02 - Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement
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ASTM A955/A955M-02 - Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement
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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) for the latest information.
Designation: A 955/A 955M – 02
Standard Specification for
Deformed and Plain Stainless Steel Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designation A 955/A 955M; 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* 1.5 Weldability of most stainless steel compositions is
generally good, however, pre-weld or post-weld procedures, or
1.1 This specification covers deformed and plain stainless
both, are necessary. Where material is to be welded, a welding
steel bars for concrete reinforcement used in applications
procedure suitable for the chemical composition and intended
requiring resistance to corrosion or controlled magnetic per-
use or service shall be used. Retesting of physical properties
meability. The standard sizes and dimensions of deformed bars
should be considered following welding procedures depending
and their numerical designation shall be those listed in Table 1.
upon the steel composition and welding operation involved.
The text of this specification references notes and footnotes
which provide explanatory material. These notes and footnotes
NOTE 2—It is recommended that the user consult the manufacturer for
(excluding those in tables and figures) shall not be considered
information available from the Nickel Development Institute (NIDI)
(Toronto, Canada).
as requirements of the specification.
1.1.1 Supplementary requirement (S1) of an optional nature
1.6 This specification is applicable for orders in either
is provided. It shall apply only when specified by the purchaser.
inch-pound units (as Specification A 955) or in SI units (as
In order to obtain a controlled magnetic permeability product,
Specification A 955M).
steel conforming to Supplementary Requirement S1 should be
1.7 The values stated in either inch-pound or SI units are to
ordered.
be regarded separately as standard. Within the text, the SI units
1.2 The chemical composition of the stainless steel alloy
are shown in brackets. The values stated in each system are not
shall be selected for suitability to the application involved by
exact equivalents; therefore, each system shall be used inde-
agreement between the manufacturer and the purchaser. This is
pendently of the other. Combining values from the two systems
an important consideration in achieving the desired corrosion
may result in nonconformance with the standard.
resistance and/or controlled magnetic permeability.
2. Referenced Documents
NOTE 1—The alloys shown in Table 2 have found the most use in North
2.1 ASTM Standards:
America. These and other stainless steel alloys specified in A 276 or other
specifications are available for consideration in product selection. Consult A 6/A6M Specification for General Requirements for
with the steel manufacturer for stainless steel alloy availability.
Rolled Structural Steel Bars, Plates, Shapes, and Sheet
2
Piling
1.3 Bars are generally of three minimum yield levels,
A 262 Practices for Detecting Susceptibility to Intergranu-
namely, 40 000 [300 MPa], 60 000 [420 MPa], and 75 000 psi
3
lar Attack in Austenitic Stainless Steels
[520 MPa], designated as Grade 40 [300], Grade 60 [420], and
3
A 276 Specification for Stainless Steel Bars and Shapes
Grade 75 [520], respectively.
A 342 Test Methods for Permeability of Feebly Magnetic
1.4 Plain rounds in sizes up to and including 2 in. [50.8 mm]
4
Materials
in diameter, when specified for dowels, spirals, structural ties,
A 370 Test Methods and Definitions for Mechanical Testing
and supports, shall be furnished under this specification in
3
of Steel Products
Grade 40 [300], Grade 60 [420], and Grade 75 [520], respec-
A 484/A484M Specification for General Requirements for
tively. Bending properties, when required, shall be by agree-
3
Stainless Steel Bars, Billets, and Forgings
ment between the manufacturer and purchaser. Requirements
A 510/A510M Specification for General Requirements for
providing for deformations and marking shall not be applicable
3
Wire Rods and Coarse Round Wire, Carbon Steel
to plain bars.
A 700 Practices for Packaging, Marking, and Loading
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
2
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
Annual Book of ASTM Standards, Vol 01.04.
3
A01.05 on Steel Reinforcement.
Annual Book of ASTM Standards, Vol 01.03.
4
Current edition approved November 10, 2002. Published January 2003. Origi-
Annual Book of ASTM Standards, Vol 03.04.
nally approved in 1996. Last previous edition approved in 2001 as A 955M - 01.
*A Summary of Changes sectio
...

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Rephosphorized and Resulfurized Carbon SteelE, G, H    
Designation  
Grade  
Carbon  
Manganese  
Phosphorus  
Sulfur  
Lead  
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0.13 max  
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...  
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FIG. 1 Locations in Typical Cross Sections of Steel Bars at Which Desired Properties Are Obtained  
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This specification covers hot-finished or cold-finished bars except bars for reforging. It includes rounds, squares, and hexagons, and hot-rolled or extruded shapes, such as angles, tees, and channels in the more commonly used types of stainless steels. The bars shall be furnished in one of the following conditions: Condition A in which the bars are annealed, Condition H in which the bars are hardened and tempered at a relative temperature, Condition T in which the bars are hardened and tempered at a relatively high temperature, Condition S in which the bars are strain hardened or relatively light cold worked, and Condition B in which the bars are relatively severe cold worked. The material shall be subjected to a mechanical test to determine its tensile strength, yield strength, elongation, and Brinell hardness.
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Note 1: For bars for reforging, see Specification A314.
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1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.  
1.3 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.

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This guide covers a group of requirements for carbon and alloy steel bars under each of the following specifications: hot-rolled carbon steel bars, cold-finished carbon steel bars, hot-rolled alloy steel bars, and cold-finished alloy steel bars. Heat and product analysis shall be performed on several grades of carbon steel bars, wherein the material shall conform to the required chemical composition for carbon, manganese, phosphorus, and sulfur. Several grades of alloy steel bars shall also undergo heat and product analysis and shall meet the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, and molybdenum. When compositions other than those indicated in the specified chemical components are required, the composition limits shall be prepared using the specified ranges and limits for carbon steel and alloy steel. The material shall undergo grain size test and shall conform to the specified grain size requirement. Mechanical tests shall also be performed on the steel test specimens.
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Title of Specification  
ASTM
DesignationA  
Hot-Rolled Carbon Steel Bars:  
Steel Bars, Carbon, Quenched and Tempered  
A321    
Steel Bars and Shapes, Carbon Rolled from “T'' Rails  
A499    
Steel Bars, Carbon, Merchant Quality, M-Grades  
A575    
Steel Bars, Carbon, Hot-Wrought, Special Quality  
A576    
Steel Bars, Carbon, Merchant Quality, Mechanical Properties  
A663/A663M    
Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties  
A675/A675M    
Carbon and Alloy Steel Bars for Springs  
A689    
Cold-Finished Carbon Steel Bars:  
Steel Bar, Carbon and Alloy, Cold-Finished  
A108    
Cold-Drawn Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirements  
A311/A311M  
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Steel Bars, Alloy, Standard Grades  
A322    
Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements  
A304    
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A434/A434M    
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A739    
Cold-Finished Alloy Steel Bars:  
Steel Bars, Alloy, Hot-Rolled or Cold-Finished, Quenched and Tempered  
A434/A434M    
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A696    
A These designations refer to the latest issue of the respective specifications, which appear either in the Annual Book of ASTM Standards, Vol 01.05, or as reprints obtainable from ASTM.  
1.2 In case of any conflict in requirements, the requirements of the purchase order, the individual material specification, and this general specification shall prevail in the sequence named.  
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall used independently of the other, and values from the two systems shall not be combined.  
1.4 For purposes of determining conformance to this specification and the various material specifications referenced in 1.1, dimensional values shall be rounded to the nearest unit in the right-hand place of figures used in expressing the limiting values in accordance with the rounding method of Practice E29.
Note 1: Specification A29/A29M previously listed dimensional tolerances for cold-finished bars; these are now found in Spe...

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Standard Specification for Precipitation Hardening Iron Base Superalloy Bars, Forgings, and Forging Stock for High-Temperature Service

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This specification covers hot-finished or cold-finished precipitation hardening iron base superalloy bars, forgings, and forging stock for high-temperature service. The mechanical properties of these alloys are developed by suitable solution treating and precipitation hardening treatments. Two grades of iron base alloy are covered; Grade 660 and Grade 662 (bars and forgings). The material shall meet the requirements as to stress rupture properties specified. The material shall conform to the chemical, mechanical, and metallurgical properties requirements specified.
SCOPE
1.1 This specification2 covers hot-finished or cold-finished precipitation hardening iron base superalloy bars, forgings, and forging stock for high-temperature service. The mechanical properties of these alloys are developed by suitable solution treating and precipitation hardening treatments.  
1.2 Two grades of iron base alloy are covered. Selection will depend upon design, service conditions, mechanical properties, and elevated temperature characteristics.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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1.5 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.

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ASTM
ASTM A950/A950M-11(2023)(Specification)
Standard Specification for Fusion-Bonded Epoxy-Coated Structural Steel H-Piles and Sheet Piling

ABSTRACT
This specification covers the qualification requirements for structural steel H-piles and sheet piling with protective fusion-bonded epoxy coating applied by electrostatic spraying, flocking, or fluidized bed processing. Surface preparation techniques shall be performed by abrasive blast cleaning, grinding and chemical washing prior to coating application. The powder coating shall be heat treated and cured before visible oxidation occurs. Coating materials shall undergo thickness measurements and bend testing, and shall conform to the requirements for film thickness, flexibility and continuity, impact resistance, chemical composition, and corrosion resistance. The coated H-piles or sheet piling shall be stored off of the ground on supports. While handling equipment, bundling bands for packaging and tie-down bands for shipping shall have padded contact areas so as to avoid damage and excessive deflection.
SCOPE
1.1 This specification covers structural steel H-piles and sheet piling with protective fusion-bonded epoxy coating applied by the electrostatic spray, flocking, or fluidized bed process.  
Note 1: The coating applicator is identified throughout this specification as the manufacturer.  
1.2 Requirements for coatings are contained in Annex A1.  
1.3 This specification is applicable for orders in either inch-pound units (as Specification A950) or SI units (as Specification A950M). 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.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

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ASTM
ASTM A582/A582M-22(Specification)
Standard Specification for Free-Machining Stainless Steel Bars

ABSTRACT
This specification covers hot-finished or cold-finished bars, except bars for forging, suitable for machining processes. It includes rounds, squares, and hexagons in the more commonly used types of stainless free-machining steels designed especially for optimum machinability and for general corrosion and high-temperature service. Bars may be furnished either hot finished or cold finished in one of the conditions specified. Materials shall adhere to specified chemical composition requirements. At least one hardness testing shall be made midway between surface and center on each lot to determine that the material conforms to hardness requirements. Also, test methods and definition for hardness testing are presented.
SCOPE
1.1 This specification covers hot-finished or cold-finished bars, except bars for forging (Note 1), suitable for machining processes. It includes rounds, squares, and hexagons in the more commonly used types of stainless free-machining steels designed especially for optimum machinability and for general corrosion and high-temperature service. Stainless steel bars other than the free-machining types are covered in a separate specification (Note 2).  
1.2 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard: within the text and tables, the SI units are shown in [brackets]. The values stated in each system may not be exact equivalents: therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
Note 1: For bars for reforging, see Specification A314.  
Note 2: For non-free machining stainless bars, see Specification A276.  
1.3 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.

  • Technical specification
    4 pages
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  • Technical specification
    4 pages
    English language
    sale 15% off