BS4449 Steel Reinforcement Rebar
6
Oct-31/2024
BS4449 Steel Reinforcement Rebar DescriptionBS4449 is yet another deformed steel bar standard. It is also differentiated as per European standards. When it comes to manufacturing, the steel bars falling in this standard are also hot rolled, which means that they are also used for general purposes, i
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BS4449 Steel Reinforcement Rebar Description
BS4449 is yet another deformed steel bar standard. It is also differentiated as per European standards. When it comes to manufacturing, the steel bars falling in this standard are also hot rolled, which means that they are also used for general purposes, i.e. in common construction projects. These deformed bars are also available between 12 mm to 30 mm diameter size. And the common lengths that they are available in are 9 m and 12 m. Though, it might vary highly.
BS 4449:97 British Rebar Specifications Rated
DiameterNominal Cross Section Area Weight EN To The Ribs (mm) Longitudinal Ribs (mm) Pitch / Step
mmRibs Tip Distance
mmKg / m
Tolerance
%
Height Width Height Width mm m㎡ min. max. min. max. min. max. min. max. min. max. min. max. 6 28.3 0.222 ± 9 0.3 0.6 0.48 0.72 0.3 0.84 0.48 1.2 3,.0 4.8 1.5 2.3 8 50.3 0.395 ± 6.5 0.4 0.8 0.64 0.96 0.4 0.84 0.64 1.6 4.0 6.4 2.0 3.1 10 78.5 0.616 0.5 1.0 0.8 1.2 0.5 0.84 0.8 2.0 5.0 8.0 2.5 3.9 12 113.1 0.888 ± 4.5 0.6 1.2 0.96 1.44 0.6 0.84 0.96 2.4 6.0 9.6 3.0 4.7 16 201.1 1.579 0.8 1.6 1.28 1.92 0.8 0.84 1.28 3.2 8.0 12.8 4.0 6.2 20 314.2 2.466 1.0 2.0 1.6 2.4 1.0 0.84 1.6 4.0 10.0 16.0 5.0 7.8 25 490.9 3.854 1.25 2.5 2.0 3.0 1.25 0.84 2.0 5.0 12.5 20.0 6.2 9.8 32 804.2 6.313 1.60 3.2 2.56 3.84 1.60 0.84 2.56 6.4 16.0 25.6 8.0 12.5 40 1256.6 9.864 2.0 4.0 3.2 4.8 2.0 0.84 3.2 8.0 20.0 32.0 10.0 15.7 50 1963.5 15.413 2.5 5.0 4.0 6.0 2.5 0.84 4.0 10.0 25.0 40.0 12.5 19.6
BS 4449:97 Steel Rebar Mechanical Properties Quality
Akma N / mm2< Akma / Pull Rate N/mm2 Elongation Elasticity Total max. % AGT min. min. min. min. GR 250 250 Akma x 1.15 22 – GR 460 A 460 Akma x 1.05 12 2.5 GR 460 B 460 Akma x 1.08 14 5
BS 4449:97 Steel Rebar Chemical Properties Element GR 250 % max. GR 460 A / B % max. Ribs and Marking Method Casting Product Casting Product 
C 0.25 0.27 0.25 0.27 P 0.060 0.065 0.050 0.055 S 0.060 0.065 0.050 0.055 N 0.012 0.013 0.012 0.013 CE 0.42 0.45 0.51 0.54 Mn Cr+Mo+V Ni+Cu CE = C + ————- + ——————- + —————– 6 5 15
Scope of Application
Widely used in houses, bridges, roads, especially railways and other civil engineering.
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