» Shyam TMT Re-Bars- Fe415 » Shyam TMT Re-Bars- Fe500 » Shyam TMT Re-Bars- CRS


Shyam TMT Re-Bars- Fe500

High strength for high strength applications

This Shyam Branded Product is ideal for applications in RCC structures in flyovers, dams, bridges and other critical structures where high yield load (design load) is required without compromising on the ductility.

 

 

Physical Properties

  

ASTM
A615M
Gr. 60(420)

ASTM
A615M
Gr. 75(520)

 BS
4449
Gr. 460		 IS:1786
Gr.Fe-500		 Shyam 500
TMT Re-Bars

Tensile Strength,
N/mm2, min

620

690

506

545.0

640
Yield Strength,
N.mm2, min

420

 520 460 500.0 550
% Elongation, min

7-9*
(Depending
on Bar No.)

 6-7*
(Depending
on Bar No.)		 12 12.0 17
* The gauge length for ASTM Standards in 200mm where as for BS and Indian Standards
in 5.65 Sq.rt. So

Chemical Properties

  

ASTM
A615M
Gr. 60(420)

ASTM
A615M
Gr. 75(520)

 BS
4449
Gr. 460		 IS:1786
Gr.Fe-500		 Shyam 500
TMT Re-Bars
C% max
P% max
S% max
Mn% min
CE% max
Nitrogen ppm max

-
0.060
-
-
-
-

 -
0.060
-
-
-
-		 0.25  
0.050
0.050
-
-
-		 0.30  
0.060
0.060
-
-
-
0.25
0.050
0.050
0.60
0.40
120

Features

Further to the features of Shyam TMT Re-Bars-Fe 415, the Fe-500 grade material have the following added special features:

Economic Cost Advantage

The simple formula to calculate the area of steel in tension of a single reinforcement beam is as follows:
In case of Fe 415 and Fe 500 TMT Re-Bar material, the value of fy would be 415 N/mm2 and 500 N/mm2 respectively.

 

Ast. = 0.85 x M x D
fy

Where,
Ast = Area of steel in tension
M= Moment in tension
D= Depth of Section
Fy= Stress of Steel in tension

The above calculations indicate that more the tensile strength, lesser the consumption of steel.

When the effective material-save factor is considered, the following table should be analysed:

Type of Structure

Steel requirement by using Fe415

Steel requirement by using Fe500

Saving in Steel by using FE 500
RCC Foundation, heavy beam, slab, etc

1.00 MT

0.83 MT

170 Kg

Hence, the total quantity of steel saved is 170 Kg by using Shyam 500 TMT Re-Bars in place of Fe 415 grade material available in the market.

Special Weldability

It is known that increasing the carbon content of the material increases the strength of the material. Shyam 500 TMT Re-Bar is produced with low carbon equivalent. The higher strength property is imparted through controlled thermo mechanical treatment to ensure superior weldability. Shyam 500 TMT Re-Bars do not require pre or post welding treatment.

Higher Corrosion Resistance

Shyam TMT Re-Bars have a uniform and thick tempered martensitic rim, completely free from internal stress. This martensitic rim (thicker than Fe415) improves the corrosion resistance of the Shyam 500 TMT Re-Bars as well as fatigue strength, when compared to traditional TMT Re-Bars.

Applications

Apart from usage in general construction sector these Re-Bars find critical importance in the following sites.

• Dams
• Bridges
• High-rise Buildings
• Chimney
• Power Plants
• Critical Structures

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