1.1 This specification covers deformed and plain carbon-steel bars in cut lengths and coils for concrete reinforcement. Steel bars containing alloy additions, such as with the Association for Iron and Steel Technology and the Society of Automotive Engineers series of alloy steels, are permitted if the resulting product meets all the other requirements of this specification. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1.
1.2 Bars are of five minimum yield strength levels: namely, 408201;000 psi [280 MPa], 608201;000 psi [420 MPa], 758201;000 psi [520 MPa], 808201;000 psi [550 MPa], and 100 000 psi [690 MPa], designated as Grade 40 [280], Grade 60 [420], Grade 75 [520], Grade 80 [550], and Grade 100 [690], respectively.
Note 1: Grade 100 [690] reinforcing bars were introduced in this specification in 2015. In contrast to the lower grades, which have ratios of specified tensile strength to specified yield strength that range from 1.31 to 1.5, Grade 100 [690] reinforcing bars have a ratio of specified tensile strength to specified yield strength of 1.15. Designers should be aware that there will, therefore, be a lower margin of safety and reduced warning of failure following yielding when Grade 100 [690] bars are used in structural members where strength is governed by the tensile strength of the reinforcement, primarily in beams and slabs. If this is of concern, the purchaser has the option of specifying a minimum ratio of tensile strength to actual yield strength. Consensus design codes and specifications such as “Building Code Requirements for Structural Concrete (ACI 318)” may not recognize Grade 100 [690] reinforcing bars: therefore the 125 % of specified yield strength requirements in tension and compression are not applicable. Mechanical and welded splices should meet a minimum specified tensile strength of 115 000 psi [790 MPa].
Note 2: Designers need to be aware that design standards do not recognize the use of the No. 20 [64] bar, the largest bar included in this specification. Structural members reinforced with No. 20 [64] bars may require approval of the building official or other appropriate authority and require special detailing to ensure adequate performance at service and factored loads.
1.3 Plain bars, in sizes up to and including 21/2 in. [63.5 mm] in diameter in coils or cut lengths, when ordered shall be furnished under this specification in Grade 40 [280], Grade 60 [420], Grade 75 [520], Grade 80 [550], and Grade 100 [690]. For ductility properties (elongation and bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply. Requirements providing for deformations and marking......
ASTM A615/A615M-15a history
- 2022 ASTM A615/A615M-22 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2020 ASTM A615/A615M-20 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2018 ASTM A615/A615M-18e1 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2018 ASTM A615/A615M-18 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2016 ASTM A615/A615M-16 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2015 ASTM A615/A615M-15ae1 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2015 ASTM A615/A615M-15a Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2015 ASTM A615/A615M-15 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2014 ASTM A615/A615M-14 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2013 ASTM A615/A615M-13 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2012 ASTM A615/A615M-12 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2009 ASTM A615/A615M-09b Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2009 ASTM A615/A615M-09a Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2009 ASTM A615/A615M-09 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2008 ASTM A615/A615M-08b Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2008 ASTM A615/A615M-08a Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2008 ASTM A615/A615M-08 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2007 ASTM A615/A615M-07 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2006 ASTM A615/A615M-06a Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2006 ASTM A615/A615M-06 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2005 ASTM A615/A615M-05a Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
- 2005 ASTM A615/A615M-05 Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2004 ASTM A615/A615M-04b Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2004 ASTM A615/A615M-04a Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2004 ASTM A615/A615M-04 Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2003 ASTM A615/A615M-03a Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2003 ASTM A615/A615M-03 Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2002 ASTM A615/A615M-02 Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2001 ASTM A615/A615M-01b Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2001 ASTM A615/A615M-01a Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2001 ASTM A615/A615M-01 Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 2000 ASTM A615/A615M-00 Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement
- 1979 ASTM A615-79 Standard Specification for Deformed And Plain Billet-Steel Bars For Concrete Reinforcement