Brahma Enterprises Pvt Ltd

Product Details:
Higher fatigue strength
Fatigue test corried out on VIZAG TMT bors (by subjecting to alternate tensile stressing) has shown that the fatigue strength of the bars is equal to the reinforcement bars produced by other methods. The fatigue test was also carried out on bent and angled hors encased in concrete. The results were obtained by using constant amplitude loading of 200 MPa with a maximum stress equal to 0.7 X Yield Strength. The fatigue strength of the these bars meets the requirements given in various International Standards.
Special Features:
.Low carbon content and made from fully killed steel.
Higher yield strength, Ultimate tensile strength and higher percentage elongation when compared to cold twisted bars of same grade.
Easy bendability, weldability and excellent ductility ensures economy and safety of use.
In-built ability to resist loss of strenth at higher temperature.
Require less energy for bending and re-bending along with superior reverse bending properties. Can be butt welded or lap-welded.
. Use of Fe-500 grade results in saving more than 15% in steel consumption when compared to cold twisted bars.
. Higher corrosion resistance and sesmic resistance compared to CTD.
. Ideally suited for any type of concrete structure.
Can be butt welded or lap welded
The low carbon content and low carbon equivalent of VIZAG TMT reinforcement bars ensure excellent weld- ability even while using any of the welding processes such as arc welding, flash butt welding, gas shielded semi automatic welding, gas pressure welding and resistance welding etc. Welding of these bars does not require pre-heating or post heating. VIZAG TMT bars indicate good welding properties in case of butt welds, cross welds and lap welds. Tensile tests carried out on these reinforcing bars after butt welds, cross welds and lap welds have shown no failure at the weld joints. Normal electrodes with matching strength can be used for welding.
In the welding of steel, the tendency to produce hard and brittle heat cted zones is maximum when cool- ing rates of the weld and the carbon content are high.
In addition, in those welding processes, where molten metal filler is used, such as in manual metal arc welding, hydrogen pick up may occur leading to hydrogen induced cracking in the heat affected zone. In case of welding rein forcement bars, hard brittle welds of low ductility and heat affected zone can occur in susceptible steels due to fast cooling rates. VIZAG TMT bars have got very low susceptibility to both heat affected zone brittleness and hydrogen induced cracking due to their low carbon content. These bars when welded show no loss of strength at the load carrying joints.