TMT Steel Bars

The Thermo Mechanically Treated TMT steel bars also known as reinforcement steel and wire rods are primarily used by the construction industry. Its high-corrosion and rust- resistance features make it the first choice for buildings in costal areas and in areas of high humidity. The manufacturing process of TMT involves 3 stages of treatment – Quenching, Self-tempering and Atmospheric Cooling. Stage 1 – The reheated billet first gets rolled and is passed through the quenching process where the surface of the bar is instantly cooled to martensite while the core is still austenitic. Stage 2 – Heat from the core of the bar dissipates to the surface allowing forming tempered martensite, while the core remains austenitic. This process is called self-tempering. Stage 3 – Due to atmospheric cooling, wherein the bar is cooled on the cooling bed, results in the austenitic core being converted into ductile ferrite-pearlite core; which gives TMT its unmatched qualities of strength and ductility Its ductility and bend ability on the other hand, makes it the perfect choice for buildings in seismic zones for high-stress construction structures. They find wide application for a number of high-specialty and custom constructions including coastal and marine environments which are susceptible to corrosion and general purpose concrete reinforcement structures like Homes, Apartments, Hospitals, Hotels, Auditoriums, Bridges, Dams, Flyovers, Thermal & Hydel Power Plants, Industrial Structures, High-rise buildings Earthquake-sensitive zones, Underground platforms in Metro Railways and Rapid Transport Systems.

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