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Rebar (De-formed Bar)

A rebar (short for reinforcing bar), also known as reinforcing steel, reinforcement steel, rerod, a deformed bar, reo, or reo bar, is a common steel bar, and is commonly used as a tensioning device in reinforced concrete and reinforced masonry structures holding the concrete in compression. It is usually formed from carbon steel, and is given ridges for better mechanical anchoring into the concrete

Rebar is available in different grades and specifications that vary in yield strength, ultimate tensile strength, chemical composition, and percentage of elongation.
The grade designation is equal to the minimum yield strength of the bar in ksi (1000 psi) for example grade 60 rebar has a minimum yield strength of 60 ksi. Rebar is typically manufactured in grades 40, 60, and 75.

ASTM A 615                                                          BS 4449G
Grade  N/MM2Min. Yield Strength                                 Grade    MPA Min. Yield Strength
40        280          
60        420            1997/GR460B                                                     460
75        520            GR 500 C (Seismic Grade)                                   575
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