What Is TMT Bar? And What Are Its Advantages

What is TMT Bar?

TMT means Thermo Mechanical Treatment, which is a thermomechanical process; These TMT steel bars are generally used material in construction for enhanced protection against earthquake and another type of natural disasters. To ensure safety for your structure TMT steel bars should be resistant to corrosion which helps to obtain a longer life to your structure.

TMT bars or Thermo-Mechanically Treated bars are high-strength reinforcement bars having a tough outer core and a soft inner core. The very first step of the manufacturing process involves passing the steel wires through a rolling mill stand. Thereafter, these rolled steel wires are again passed through the Tempcore water cooling system. While passing the wires through the water-cooling system, the water pressure is optimized. The sudden quenching and drastic change in temperature toughens the outer layer of the steel bar, thus making it super tough and durable. Once this process is over, the TMT bars are subject to atmospheric cooling. This is done in order to equalize the temperature difference between the soft inner core and the tough exterior. Once the TMT bar cools down, it slowly turns into a ferrite-pearlite mass. The inner core remains soft giving the TMT bar great tensile strength and elongation point. This design is unique to the TMT bars and gives superior ductility to the bars. Also, this unique manufacturing technique and the absence of Cold stress make this bar corrosion-resistant and boost its weldability.

This same manufacturing process is used to manufacture high-quality ARS TMT bars. The best TMT bars manufacturers in India. The most important features of ARS TMT bar include higher elongation. This improves the bend/re-bend properties or the TMT bars, thus making it safe from natural calamities such as an earthquake. The Thermal stability of ARS TMT bar is high which makes them safe from any fire accidents. The special ribbed design of the ARS TMT bars forms a stronger bond with the concrete or cement, thus, provides additional support and strength to the building structure and improves their longevity and durability. The high tensile strength and flexibility make ARS TMT bars the ultimate choice for earthquake-prone zones. ARS TMT bars have greater shock-absorbing capacity when compared to other TMT bars. This prevents the collapse of a building during an earthquake and ensures the longevity of the structure. Compared to ordinary steel bars, the same quantity of TMT bars can provide 20% additional strength to the structure.

Thermo Mechanically Treated bars or TMT bars are manufactured by using a unique technique that leaves them with a tough outer area and a soft inner core – this makes the TMT bar strong but also flexible.

ARS uses the advanced technology to manufacture its TMT bars. This cutting-edge technology exposes the steel to temperatures as high as 1100 degree Celsius. The steel ‘billets’ are then passed through rolling mills to give them shape and then quickly cooled with a process called quenching wherein high-pressure water spray cools the outside of the bars leaving the inner core to cool slowly on the cooling beds.

This two-layered cooling process makes the outer area of the bars extremely strong and gives the inner core more ductility. Precisely why, ARS produces the best TMT bars.

Advantages of the best TMT bars

  • More strength –  The bars are ideal material to be used with concrete for making structures stronger. The unique ribbed pattern on the TMT bars also provides extra strength by bonding them more tightly with concrete. The ductility of the TMT bars makes them easier to work with, and pre-welded meshes can be made off-site reducing the overall construction time.
  • Corrosion-resistant –  The TMT manufacturing process imparts anti-rust properties to the bars. Coarse carbides, which are the main culprits for corrosion in steel, are stopped from building up during the water-cooling phase. Thus, making the structures made from TMT steel more durable.
  • Fire-resistant –  Due to its high thermal stability, the best TMT bars can withstand temperatures ranging from 400 to 600 degree Celsius. This protects the building’s structure even during a fire.
  • Earthquake proof –  The soft core of the TMT bars imparts a high level of ductility – giving the structures made with TMT more flexibility to manage dynamic and seismic loading.
  • Cost-effective–  The best TMT bars have higher tensile strength and better elongation value, which basically means you need less steel for the same amount of construction. Apart from reducing the cost of raw material, this also saves cost on transportation and storage. TMT steel bars are also easier to manage on-site, which leads to a further cost saving due to reduced construction time.