Thermo Mechanically Treated or TMT bars are reinforcement bars made of steel that undergo a special treatment to form superior tensile strength and ductility. They are made of high-quality steel with the addition of chemical components like sulphur, carbon, phosphorus, and copper for enhanced properties.
TMT bars provide a vast array of constructional and engineering benefits at a reasonable rate. Let’s look closer at the ten features of TMT bars from top-rated TMT steel bar manufacturers that make them an indispensable part of any construction project.
Ten Features of TMT Bars
Tensile strength measures how much tensile stress the TMT bars can withstand before it leads to ductile or brittle failure. Ductile failure refers to the preliminary stage of failure that occurs when the bars are pushed beyond the yield point and the bars undergo permanent deformation. Brittle deformation is the sudden breakage of the TMT bars due to excessive stress.
Steel is prone to disintegration in the presence of chloride ions. However, the thermal-mechanical treatment TMT bars undergo makes them resistant to corrosion. This property makes them ideal for construction in coastal and humid regions.
Fatigue strength is the amount of cyclic stress that the TMT bars can withstand before breaking down under pressure. While TMT bars are highly resistant to fatigue, it can also depend on the type of steel, size, and shape of the steel, the manufacturing process, and more. External factors such as the loading cycle, corrosion, temperature, and welding process can also affect the bar’s fatigue resistance.
It is crucial for construction materials, especially TMT bars, that form the structure of the buildings to be resistant to heat. In case of abnormally high temperatures or fire outbreaks, the internal structure of the construction must hold up to prevent significant damage.
Especially since TMT bars are used to construct large infrastructure such as bridges, dams, and flyovers, TMT bars need to be able to hold the concrete together until people can be evacuated safely.
Ganesh Super, One of the Best TMT Bars Companies, supplies rebars to earthquake-prone areas that are especially well-known for producing rebars that are flexible enough to absorb shocks from seismic tremors and sudden changes in the amount of load on the structure. TMT bars undergo a unique type of milling, which involves heating the steel to a very high temperature, rolling it to give the desired specifications, and then cooling it down quickly and suddenly to provide superior flexibility.
Ductility is the property of TMT bars that allows them to be elongated without losing strength. Ductility is a crucial feature of TMT bars as it determines how much it can be bent to create intricate structures. It also helps structures stand strong during earthquakes.
The refined microstructure created through self-tempering the bars ensures that the TMT bars can be welded without compromising their strength and ductility. The enhanced weldability of TMT bars allows manufacturers of TMT bars to save up to 20% steel compared to other steel rebars.
TMT bars are significantly lighter than regular steel rebars. Since they are light in weight, TMT bars are easy to transport, use, and store. This substantially reduces transportation costs as well as improves overall project efficiency.
The adhesion and friction created by the ribs on TMT bars help them create a strong bond with concrete. The strength of the bond depends on the amount of contact between the surface of the TMT bars and the concrete. A specific water-cement ratio must be followed to create and maintain a strong bond.
TMT bars are stronger than regular steel bars thanks to their high tensile strength. Hence, the quantity of TMT bars required for construction projects is less, resulting in significant savings. The high weldability of TMT bars facilitates easy and quick bending, reducing transportation and on-site handling costs. Ganesh Super is one of the TMT Bars Manufacturers that supplies affordable TMT bars.
TMT bars are an essential component of any construction project and provide exceptional strength and durability to structures. In this blog, we have explored the top ten features of TMT bars from top-rated TMT steel bar manufacturers— tensile strength, corrosion resistance, fatigue resistance, heat resistance, seismic resistance, ductility, weldability, lightweight, strong bonding, and affordability. These features set TMT bars apart from regular steel rebars and provide superior support to structures.