Thermo Mechanically Treated (TMT) bars are conceived with Temp core technology, otherwise called Thermex. After rolling the steel wires out from the finish stand, they will be subjected to a rapid cooling system by passing through a series of water jets.

This is the important factor for the TMT bars to gain higher yield strength.

The yield strength of the steel grade will be mentioned as Fe 250, Fe 415, Fe 500. Higher the grades, higher the strength of the steel bars. Other than yield strength, there are several factors to be considered before buying TMT bars in Tamilnadu. 

The importance of Raw materials

First of all, the cost of the product depends on several important factors but predominantly raw materials. The TMT bars manufacturers in Tamilnadu transporting iron ore are from Odisha and Chhattisgarh mines. The cost of the steel bar bundles depends upon the storage and transportation costs, so there will be a major difference in steel prices between the industries and suppliers as well.

Properties of the best TMT bars in Tamilnadu

Anti-corrosive:

TMT bars will be manufactured with anti-corrosive properties to increase the longevity of the building. Since Tamilnadu is prone to frequent cyclones every year, the construction industry should meticulously monitor this quality while buying TMT bars in Tamilnadu.

The water cooling system resists the formation and accumulation of coarse carbides on the steel bars which is the reason for the development of corrosion resistance.

Fire-resistant:

TMT bars should develop high thermal stability which should enable them to withstand 400-600 degrees Celsius temperature to ensure the safety of the buildings.

Transverse Ribs –

Transverse ribs or lugs on the outer surface of the TMT bars should be verified, as they are the important phenomenon for bond strength between cement and steel. This improves binding strength, which in turn prevents the steel from loosening away from concrete.

Earthquake Resistant:

To stand against earthquakes, TMT bars should possess higher strength and elongation properties.

Earthquakes in Tamilnadu are not frequent but recently an earthquake measuring 5.1 on the Richter scale has been recorded. Earthquakes may hit Tamilnadu in the future. So while evaluating the properties of TMT bars in Tamil Nadu, make sure the earthquake resistance of the bars.

Superior Bend-ability:

One of the most important TMT bar tests involves Bend and Rebend tests.

In the Bend test, the TMT bars will be bent to 180 degrees at a  specific distance, to measure the cracks and fissures formation.

In the Rebend test the bent TMT bars at 135 degrees included angle will be submerged in boiling water of 100 degrees for 30 minutes and left at atmospheric room temperature. Now the bars will bend further to 157.5 degrees. If there are no cracks or breaks found, they are considered as passed.

In most cases, bars fail due to improper handling in construction sites. To avoid this practical error, verifying the bendability of the steel bars is fundamental.

Flexibility:

Since concrete is a brittle structure, reinforcement is provided to increase ductility i.e. flexibility. Choosing TMT bars that can be remolded into required frames without disturbing the strength is essential.

Transportation:

When compared to other steel bars, TMT bars are lightweight, but the higher the grades of the steel, the higher will be the dimension, weight, and strength. Analyzing the required grade will ease the transportation cost.

Company and certification:

The company manufacturing TMT bars should be certified with ISI / ISO. Buying TMT bars in Tamilnadu from reputed industries and authorized dealers will assure you the best quality TMT bars.

Price Range of TMT bars:

As we mentioned earlier, the cost of TMT bars depends on various factors. The price range of TMT bars in Tamilnadu fluctuates every day, so verifying the rates of bars from 3 to 4 outlets will save our bank and ensure good value for money.

Weighing:

Usually steel bundles are weighed in tonnes i.e. 1000 kgs. This will be done with a weighing machine, but in sites, it is carried out with the loaded vehicle.

(Weight of the steel bars = weight of the loaded vehicle – the weight of empty vehicle)

Naked eye test:
Every meter of steel bars should bear the company seal. It should be free from rust and ferrous coating. Each and every TMT bar should maintain equal length.

Environment friendly:
Some companies recycle and reuse the TMT bars in Tamilnadu. Some extreme pioneers started manufacturing TMT bars for wind farms, entering a sustainable green environment. One such TMT bar manufacturer in Tamilnadu is Kiscol TMT Pvt Ltd, providing unique, long-lasting steel bars not only for buildings but also for windmills and textile industries. Do visit their website to understand their products and supremacy.