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What is a Steel Rebar?

Rebar (Reinforcing Bar) is a ferrous steel deformed bar that is used for reinforcement, strengthening & holding concrete. It is usually formed with a surface that is patterned (known as a deformed bar) to make a better adherence to the concrete spilled around it. No specific or special patterns are there for deforming, however, the number, spacing, and the height of the marks are standardized and integrated into the primary debar. Also, there are plain bars that are used in the most specific and definite ways, only.

Since rebar holds the concrete in a compact state, it is known as a tensioning material. when it comes into the compression, concrete is a very tough and strong material, but it almost has no strength where it comes to carrying tensile loads. To overcome this, rebar casts in concrete to carry the loads.

Product name: Reinforcing Bar, Rebar, Steel Bar, Reinforcing Steel Bar

HS Code: 72283090

Production Process of Rebar

  1. Carbon or alloy Steel is melted to the liquid form,
  2. The liquid steel is pulled by s small round opening to make the rebar formed.
  3. The producer will make the curve and grooves to make sure the metal will stay stable in place inside the structure.
  4. The rebars’ ends are mostly covered by plastic caps to avoid accidental injury to construction workers.

Types of Rebar 

  • Carbon Steel Rebars
  • Stainless Steel Rebars
  • European Rebars
  • Epoxy-Coated Rebars
  • Welded Wire Fabric
  • Galvanized Rebars
  • Sheet-Metal Reinforcing Bars
  • Expanded Metal or Wire Mesh Rebars
  • Glass-Fiber-Reinforced-Polymer (GFRP) Rebars

Standards, grades, and size

  • The standards are recognized by the following:
  • The producer’s mill letter or symbol will be rolled into the rebar.
  • The bar size is rolled into the rebar and appears as a digit.
  • The rebar grade will be indicated (40, 60, 75, 80, 100, 120).
  • Obviously, the markings and specifying do more than badge the deformations. Indeed, each marking system shows the details regarding the manufacturing and specifications of each reinforcing bar.

Different countries have different ways to measure the rebar. U.S, Europe, and Canada rebar sizes charts are shown below:

Different countries have different ways to measure the rebar. U.S, Europe, and Canada rebar sizes charts are shown below:

 

U.S. rebar size

Imperial
Bar Size
“Soft”
Metric Size
Mass per unit length Nominal Diameter Nominal Area
(lb/ft) (kg/m) (inch) (mm) (inch2) (mm2)
#2 #6 0.167 0.249 0.250 6.35 0.05 32
#3 #10 0.376 0.561 0.375 9.525 0.11 71
#4 #13 0.668 0.996 0.500 12.7 0.20 129
#5 #16 1.043 1.556 0.625 15.875 0.31 200
#6 #19 1.502 2.24 0.750 19.05 0.44 284
#7 #22 2.044 3.049 0.875 22.225 0.60 387
#8 #25 2.670 3.982 1.000 25.4 0.79 509
#9 #29 3.400 5.071 1.128 28.65 1.00 645
#10 #32 4.303 6.418 1.270 32.26 1.27 819
#11 #36 5.313 7.924 1.410 35.81 1.56 1006
#14 #43 7.650 11.41 1.693 43 2.25 1452
#18 #57 13.60 20.284 2.257 57.3 4.00 2581
#18J 14.60 21.775 2.337 59.4 4.29 2678

 

European rebar size

Metric Bar Size Mass per unit length (kg/m) Nominal Diameter (mm) Cross-Sectional Area (mm2)
6,0 0.222 6 28.3
8,0 0.395 8 50.3
10,0 0.617 10 78.5
12,0 0.888 12 113
14,0 1.21 14 154
16,0 1.579 16 201
20,0 2.467 20 314
25,0 3.855 25 491
28,0 4.83 28 616
32,0 6.316 32 804
40,0 9.868 40 1257
50,0 15.413 50 1963

 

Canadian rebar size chart

Metric Bar Size Mass per unit length (kg/m) Nominal Diameter (mm) Cross-Sectional Area (mm2)
10M 0.785 11.3 100
15M 1.570 16.0 200
20M 2.355 19.5 300
25M 3.925 25.2 500
30M 5.495 29.9 700
35M 7.850 35.7 1000
45M 11.775 43.7 1500
55M 19.625 56.4 2500

 

Also, there are 3 grades of Imperial size having equivalents of metric:

Inch grade Metric grade Pounds per square inch Megapascals
40 280 40,000 280
60 420 60,000 420
75 520 75,000 520

Many rules and guidelines are there for using various grades, and the below are applicable ASTM Standards by Grade:

40 & 50 60 75 300 & 350 420 520
S billet A615 A615 A615 A615M A615M A615M
I rail A616 A616 A996M A996M
IR Rail Meeting Supplementary
Requirements S1
A616 A616
A axle A617 A617 A996M A996M
W Low-alloy A706 A706M

 

European producers will use EN10800 metric nomination which is shown as a K followed by the bar mass in Kg/1 meter of length. For example, K3 weighs three kilograms per meter.

Canadian Rebar Supplier recognizes for a symbol of the mill followed the bar size.

 

Source:

www.bnproducts.com

www.b2bmetal.eu

www.reinforcing-bar.com

www.astm.org