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ASTM-A955 2011

$44.96

A955/A955M-11e1 Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

Published By Publication Date Number of Pages
ASTM 2011 13
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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 1The 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 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.

1.5 Plain rounds 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 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.

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 2It 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
2 TABLE 1
3 Terminology
Ordering Information
Materials and Manufacture
TABLE 2
4 Chemical Composition
Requirements for Deformations
Measurement of Deformations
Tensile Requirements
FIG. 1
5 Bending Requirements
Hardness Requirements
Corrosion Resistance Requirements
Magnetic Properties
Permissible Variation in Weight [Mass]
Finish
Number of Tests
TABLE 3
TABLE 4
6 Retests
Test Specimens
Report
Inspection
7 Rejection
Rehearing
Marking
Packaging and Package Marking
Keywords
A1. EVALUATION OF CORROSION RESISTANCE
A1.1
A1.2
A1.3
8 A2. RAPID MACROCELL TEST
A2.1 Scope
A2.2 Test Equipment and Materials
A2.3 Test Specimen Preparation
A2.4 Test Method
9 A2.5 Report
FIG. A2.1
10 A3. CRACKED BEAM TEST
A3.1 Scope
A3.2 Test Equipment and Materials
A3.3 Test Specimen Preparation
A3.4 Test Method
11 FIG. A3.1
12 A3.5 Report
A4. RELATIVE DEFORMATION AREA REQUIREMENTS FOR THREE-SIDED DEFORMED BARS
A4.1
A4.2
A4.3
A4.4
A4.5
ASTM-A955 2011
$44.96