Advanced technology to meet the market requirements and superior surface quality are some of the prominent features of Falcon Steel’s rebar.

Rebar Specification

 Characteris
tics
BS 4449:2005
Gr B500B
BS 4449:2005
Gr B500C
ASTM A615
Gr 60
ASTM A615
Gr 75
ASTM A615
Gr 80
QS600
(YS>600MPa)
ISO 6935-2
:2007
B500B-R
SASO ASTM
A615:2015
Chemical Composition
Carbon (C) % 0.22 Max 0.22 Max 0.32 Max 0.32 Max
Phosphorous
(P) %
0.05 Max 0.05 Max 0.05 Max 0.05 Max 0.05 Max 0.05 Max 0.060 0.05 Max
Sulphur (S) % 0.05 Max 0.05 Max 0.05 Max 0.05 Max 0.05 Max 0.05 Max 0.060 0.05 Max
Nitrogen (N) ppm 120 Max 120 Max 120 Max 120 Max 120 Max 120 Max 120 Max 120 Max
CE (%) 0.48 Max 0.48 Max
Mechanical &
Physical Properties
Yield Strength,
MPa (min)
500 – 650 500 – 650 420 520 550 600 500 420
Tensile Strength,
MPa (min)
620 690 725 740 620
TS/YS (min) 1.08 >=1.15, <1.35 1.08
Elongation (%), (min) 9 7 7 7 14 9
Agt (%) (min) 5 7.5 5
Bend Angle 90° 90° 180° 180° 180° 180° 90° 180°
Re-bend
Angle
From 90°
Back by
at least 20º
From 90°
Back by
at least 20º
From 90º
Back by
at least 20º
Weldability
Weldable /
Non-Weldable
Weldable Weldable Non – Weldable Non – Weldable Non – Weldable Non – Weldable Non – Weldable Non – Weldable
Application
RCC
Construction
RCC Construction in seismic zone RCC
Construction
RCC
Construction
High Raise Towers High Raise Towers / Highly
loaded RCC structure
RCC
Construction
RCC
Construction
Note: Bend and Rebend tests are performed as specified in respective standards using proper mandrel diameters
Technical Features
  • BS4449:2005 GrB500B rebars are produced with low carbon equivalent & Weldable, whereas ASTM A615 Gr60, Gr75, Gr80, QS600, ISO 6935-2:2007 B500B-R and SASO ASTM A615:2015 are Non-Weldable

 

  • BS4449:2005 GrB500B rebars have High Strength Compared to ASTM A615 Gr60 which reduce steel consumption & congestion in structure, in turn reduces overall cost of project
  • BS4449:2005 GrB500B rebars have High Yield Strength i.e., minimum 500 Mpa compared to ASTM A615 Gr60, without compromising on ductility

 

  • BS4449:2005 GrB500B rebars have better bend performance, due to severe bend & re-bend angle. Rebars confirming to BS 4449:2005 specification are subjected to fatigue testing and survive minimum 5 million stress cycles.
  • QS 600 with yield strength > 600 MPa. Over the years, rebar with yield strength 420 MPa, 500 MPa etc., confirming to BS 4449 / ASTM A615 specification were available in Qatar/GCC region. Rebar with higher strength i.e., YS > 600 MPa will reduce the steel consumption by around 20% in construction, which in term lowers the overall cost of structure using QS 600 grade can also lead to reduction in column size of heavily loaded structure and there is relief from rebar congestion.

Nominal Dimensions, Weight & Tolerance On Knots

Designation Nominal Dia. (d)
(mm)
Nominal Cross Section Area
(mm2)
Unit Mass
(kg/m)
Maximum of Average Knot Space
(mm)
Height of Knot Ltgd/Ri Width
(mm)
Nominal Mass
kg/piece
Min
(mm)
Max
(mm)
6m 9m 12m
D12 12 113.1 0.888 8.4 0.5 1.0 4.7 5.33 7.99 10.66
D16 16 201.1 1.58 11.2 0.7 1.4 6.3 9.48 14.22 18.96
D18 18 254.5 2.00 12.6 0.8 1.6 7.1 12.00 18.00 24.00
D20 20 314.2 2.47 14.0 1.0 2.0 7.9 14.82 22.23 29.64
D22 22 380.1 2.98 15.4 1.1 2.2 8.6 17.88 26.82 35.76
D25 25 490.9 3.85 17.5 1.3 2.6 9.8 23.10 34.65 46.20
D28 28 615.8 4.83 19.6 1.4 2.8 11.0 28.98 43.47 57.96
D30 30 706.9 5.55 21.0 1.5 3.0 11.8 33.30 49.95 66.60
D32 32 804.2 6.31 22.4 1.6 3.2 12.6 37.86 56.79 75.72
Requirement for rib geometry
Height of transverse ribs 0.03d to 0.15d
Rib spacing,c 0.4d to 1.2d
Rib inclination, ß 35° to 75°
The projection of transverse ribs shall extend over at least 75% of circumference of the product which shall be calculated from the nominal diameters.
Longitudinal rib:
Where longitudinal rib are present, there height shall not exceed 0.10d, where d is the nominal diameter of the product.

Rebar Marking

Deformed bars produced at Falcon Steel Mills conform to various national and international standards such as, BS 4449:2005 Grade B500B/Grade B500C (Nuclear Grade & British), SASO ASTM A615:2015, ASTM A615 Grade 40/Grade 60/Grade 75/Grade 80 (American) & QS 600 (Qatar Steel High strength rebar).

The registered trade mark ‘FALCON STEEL MILLS’ is rolled on every deformed rebars at an interval of about one meter long with all identification marks.