What is grade A706 rebar?

While ASTM A706 weldable rebar excels in the above applications, it is not intended for use in carefully proportioned or detailed elements. It has some limitations with respect to moment-curvature and inelastic structural deformations. If you have questions about the suitability of A706 rebar for your intended application, or if you have any other inquiries about our products or services, please contact us at Harris Supply Solutions.

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Harris Supply is one of the largest suppliers of steel remesh and reinforcing bar products in the United States, and our extensive network of production and distribution facilities ensures that we are able to fill your order quickly and for highly competitive pricing. Check out our other rebar options epoxy coated rebar, fabricated rebar, black rebar, and coiled/spooled rebar and learn how these can suit your application.

ASTM A706 covers deformed and plain low alloy steel bars for concrete reinforcement with restrictive mechanical properties and chemical composition in order to enhance weldability. This specification covers bars and coils in two grades, Grade 60 and Grade 80. The grade designates the yield strength of the material, i.e. Grade 60 has a 60ksi minimum yield.

A706 Designation Numbers

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&#;

A706 Mechanical Requirements

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Grade 60 Grade 80 Tensile, ksi 80 100 Yield, ksi 60-78 80-98 Elongation in 8&#; Bar size #3,4,5,6 14 12 7,8,9,10,11 12 12 14,18 10 10 *Tensile strength shall not be less than 1.25 times the actual yield strength

A706 Chemical Requirements

Element Max % Carbon 0.30 Manganese 1.50 Phosphorous 0.035 Sulfur 0.045 Silicon 0.50

A706 Bend Test Requirements

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

Weldability

In addition to the above chemical requirements, A706 rebar must also have a carbon equivalent (CE) not exceeding 0.55%.  The way to calculate this is to plug the chemical composition figures for a given heat lot of steel into the following formula:

CE = %C + (%Mn / 6) + (%Cu / 40) + (%Ni / 20) + (%Cr / 10) &#; (%Mo / 50) &#; (%V / 10)

Rebar produced to this specification shall be marked with the letter &#;W&#; to indicate weldability.

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