ASTM A615 American Rebar Specifications

08 Jul.,2024

 

ASTM A615 American Rebar Specifications

ASTM A615 Steel Rebar increases the tensile strength of concrete and can be used for both primary and secondary reinforcement. It helps absorb stress and weight and facilitates the more even distribution of the tension caused by the expansion and contraction of concrete when it is exposed to heat and cold, respectively.

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ASTM A615 Steel Rebar has a rough, blue-grey finish with raised ribs throughout the bar. ASTM A615 Grade 60 Steel Rebar offers enhanced yield strength of at least 60 thousand pounds per square inch, or 420 megapascals on the metric grading scale. It also features a continuous line system, with one line running along the length of the bar which is offset a minimum of five spaces from the center. These characteristics make Grade 60 Steel Rebar particularly well-suited for medium to heavy-duty concrete reinforcement applications.

ASTM A615

ASTM A615 covers deformed and plain carbon steel bars for concrete reinforcement.  This specification covers bars and coils in four grades, Grade 40, Grade 60, Grade 75, and Grade 80. The grade designates the yield strength of the material, i.e. Grade 60 has a 60ksi minimum yield.

A615 Designation Numbers

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Bar No. Nominal Diameter 3 0.375&#; 4 0.500&#; 5 0.625&#; 6 0.750&#; 7 0.875&#; 8 1.000&#; 9 1.128&#; 10 1.270&#; 11 1.410&#; 14 1.693&#; 18 2.257&#;

A615 Mechanical Requirements

Grade 40 Grade 60 Grade 75 Grade 80 Tensile, ksi 60 90 100 105 Yield, ksi 40 60 75 80 Elongation in 8&#; Bar size #3 11 9 7 7 4,5,6 12 9 7 7 7,8 - 8 7 7 9 thru 18 - 7 6 6

A615 Bend Test Requirements

Bar Designation# Pin Dia. Grade 40 Pin Dia, Grade 60 Pin Dia, Grade 75 Pin Dia, Grade 80 3,4,5 3-1/2d 3-1/2d 5d 5d 6 5d 5d 5d 5d 7,8 - 5d 5d 5d 9,10,11 - 7d 7d 7d 14,18 - 9d 9d 9d

Weldability

Welding this material should be approached with caution since no specific provisions have been included to enhance weldability. If weldable rebar is required, rebar per ASTM A706 should be considered.

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