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MD: Bladensburg (HQ)

(301) 927-8300

4700 Annapolis Road, Bladensburg, MD 20710, USA

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All About Rebar

Mike Simon | July 29, 2021

Ernest Maier stocks Grade 60 Domestic Rebar, purchased in 20 foot lengths, in sizes #3, 4, 5, 6, 7, and 8. Per request, we can cut rebar from sizes #3 – #6.

Nomenclature

“Imperial” bar designations represent the bar diameter in fractions of an eighth (1/8) of an inch, such that #8 = 8/8 inch = 1 inch diameter.

Area = (bar size/9)2 such that area of #8 = (8/9)2 = 0.79 in2. This applies to #8 bars and smaller. Larger bars have a slightly larger diameter than the one computed using the 1/8 inch convention.

Imperial Bar Size “Soft” Metric Size Weight per unit length (lb/ft) Mass per unit length (kg/m) Nominal Diameter (in) Nominal Diameter (mm) Nominal Area (in2) Nominal Area (mm2)
#3 #10 0.376 0.561 0.375 = 3/8 9.525 0.11 71
#4 #13 0.668 0.996 0.500 = 1/2 12.700 0.20 129
#5 #16 1.043 1.556 0.625 = 5/8 15.875 0.31 200
#6 #19 1.502 2.240 0.750 = 3/4 19.050 0.44 284
#7 #22 2.044 3.049 0.875 = 7/8 22.225 0.60 387
#8 #25 2.670 3.982 1.000 = 8/8 25.400 0.79 509
#9 #29 3.4 5.071 1.128 28.65 1 645
#10 #32 4.303 6.418 1.27 32.26 1.27 819
#11 #36 5.313 7.924 1.41 35.81 1.56 1006
#14 #43 7.65 11.41 1.693 43 2.25 1452
#18 #57 13.6 20.284 2.257 57.33 4 2581

Grades

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 minimum yield strength of 60 ksi. Rebar is typically manufactured in grades 40, 60, and 75. Ernest Maier stocks grade 60 exclusively.

Common ASTM specifications are:

  • ASTM A184/A184M-19: Standard Specification for Welded Deformed Steel Bar Mats for Concrete Reinforcement
  • ASTM A704/704M-19e1: Standard Specification for Welded Steel Plain Bar or Rod Mats for Concrete Reinforcement
  • ASTM A615/A615M-20: Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
  • ASTM A706/A706M-16:Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement

VP of Sales- Accessory DivisionMike Simon

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