1、Designation:A955/A955M17Standard Specification forDeformed and Plain Stainless-Steel Bars for ConcreteReinforcement1This standard is issued under the fixed designation A955/A955M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the ye
2、ar of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers deformed and plain stainless-steel bars for concrete reinforcement in cut lengths and coi
3、lsused in applications requiring resistance to corrosion or con-trolled magnetic permeability.The standard sizes and dimen-sions of deformed bars and their numerical designation shall bethose listed in Table 1.The text of this specification referencesnotes and footnotes which provide explanatory mat
4、erial.Thesenotes and footnotes(excluding those in tables and figures)shallnot be considered as requirements of the specification.1.1.1 Supplementary requirement(S1)of an optional natureis provided.It shall apply only when specified by the purchaser.In order to obtain a controlled magnetic permeabili
5、ty product,steel conforming to Supplementary Requirement S1 should beordered.1.2 The chemical composition of the stainless steel alloyshall be selected for suitability to the application involved byagreement between the manufacturer and the purchaser.This isan important consideration in achieving th
6、e desired corrosionresistance or controlled magnetic permeability,or both,be-cause these properties are not provided by all stainless steels.NOTE1The alloys shown in Table 2 have found the most use in NorthAmerica.Other alloys may also provide desired properties;consult withthe manufacturer for stai
7、nless 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 asGrade 60 420 and Grade 75 520,respective
8、ly.1.5 Plain bars in sizes up to and including 2 in.50.8 mmin diameter in coils or cut lengths,when ordered,shall befurnished under this specification in Grade 60 420 and Grade75 520,respectively.Bending properties,when required,shall be by agreement between the manufacturer and purchaser.Requiremen
9、ts providing for deformations and marking shallnot be applicable to plain bars.1.6 Weldability of most stainless steel compositions isgenerally good,however,pre-weld or post-weld procedures,orboth,are necessary.Where material is to be welded,a weldingprocedure suitable for the chemical composition a
10、nd intendeduse or service shall be used.Retesting of physical propertiesshould be considered following welding procedures dependingupon the steel composition and welding operation involved.NOTE2It is recommended that the user consult the manufacturer forinformation available from the Nickel Developm
11、ent Institute(NIDI)(Toronto,Canada).1.7 This specification is applicable for orders in eitherinch-pound units(as Specification A955)or in SI units(asSpecification A955M).1.8 The values stated in either inch-pound or SI units are tobe regarded separately as standard.Within the text,the SI unitsare sh
12、own in brackets.The values stated in each system are notexact equivalents;therefore,each system shall be used inde-pendently of the other.Combining values from the two systemsmay result in nonconformance with the standard.1.9 This standard does not purport to address all of thesafety concerns,if any
13、,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.10 This international standard was developed in accor-dance with internationally recognized pr
14、inciples on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General
15、Requirements for Rolled1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.05 on Steel Reinforcement.Current edition approved March 15,2017.Published April 2017.Originallyapproved in 1996.
16、Last previous edition approved in 2016 as A955/A955M 16a.DOI:10.1520/A0955_A0955M-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis int
