All you wanted to know about TMT

21 Jan 2021 Editorial Team

TMT bars are widely used in general purpose concrete reinforcement structures, bridges and flyovers, dams, thermal and hydel power plants, industrial structures, high-rise buildings, underground platforms in metro railway and rapid transport system. TMT Bars are thermo-mechanically-treated through leading world tempcore based technology for high yield strength.

Manufacturing process

The first step of the manufacturing of TMT bars involves passing the steel wires through a rolling mill stand. Then the rolled steel wires are again passed through the tempcore water cooling system. While passing the wires through the cooling water system, the water pressure is optimised. The sudden quenching and drastic temperature change toughen the steel bar's outer layer, making it extremely durable. Once this process is completed, the TMT bars are subject to atmospheric cooling. This is done to equalise 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. This unique manufacturing technique and the absence of cold stress make this bar corrosion-resistant and boost its weldability.

Features of TMT bars

Earthquake resistant

Enhanced strength combined with high ductility

High thermal resistance

Better malleability

Excellent weldability without loss of strength at welded joints

Cost-efficient

Leading TMT steel bar manufacturers

Tata Steel Ltd

ArcelorMittal SA

Jindal Steel & Power Ltd

Essar Steel

JSW Steel Ltd

Kamdhenu Ltd

MSP Steel & Power Ltd

Primegold International Ltd

Rashtriya Ispat Nigam Ltd

Atlas TMT Bars Pvt. Ltd

Recent price trends in the TMT market

Price per tonne in March 2020:

TMT Bars	Price/tonne
8 mm	Rs 35,000 + 18% GST
10/12 mm	Rs 34,000 + 18 % GST
16/20/25 mm	Rs 34,000 + 18 % GST

Price per tonne in December 2020:

TMT Bars	Price/tonne
8 mm	Rs 45,000 + 18% GST
10/12 mm	Rs 44,000 + 18 % GST
16/20/25 mm	Rs 44,000 + 18 % GST

Thermo-Mechanically Treated (TMT) bars are high-strength reinforcement bars that have a tough outer core and a soft inner core. The strength of TMT bars is carefully controlled by optimising the water pressure for their pearlitic core and tough surface of tempered martensite, thereby providing optimum strength, ductility and toughness. TMT bars are widely used in general purpose concrete reinforcement structures, bridges and flyovers, dams, thermal and hydel power plants, industrial structures, high-rise buildings, underground platforms in metro railway and rapid transport system. TMT Bars are thermo-mechanically-treated through leading world tempcore based technology for high yield strength.Manufacturing process The first step of the manufacturing of TMT bars involves passing the steel wires through a rolling mill stand. Then the rolled steel wires are again passed through the tempcore water cooling system. While passing the wires through the cooling water system, the water pressure is optimised. The sudden quenching and drastic temperature change toughen the steel bar's outer layer, making it extremely durable. Once this process is completed, the TMT bars are subject to atmospheric cooling. This is done to equalise 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. This unique manufacturing technique and the absence of cold stress make this bar corrosion-resistant and boost its weldability. Features of TMT barsEarthquake resistant Enhanced strength combined with high ductility High thermal resistance Better malleability Excellent weldability without loss of strength at welded joints Cost-efficient Leading TMT steel bar manufacturersTata Steel Ltd ArcelorMittal SA Jindal Steel & Power Ltd Essar Steel JSW Steel Ltd Kamdhenu Ltd MSP Steel & Power Ltd Primegold International Ltd Rashtriya Ispat Nigam Ltd Atlas TMT Bars Pvt. Ltd Recent price trends in the TMT marketPrice per tonne in March 2020:TMT BarsPrice/tonne8 mmRs 35,000 + 18% GST10/12 mmRs 34,000 + 18 % GST16/20/25 mmRs 34,000 + 18 % GSTPrice per tonne in December 2020:TMT BarsPrice/tonne8 mmRs 45,000 + 18% GST10/12 mmRs 44,000 + 18 % GST16/20/25 mmRs 44,000 + 18 % GST

Infrastructure Energy

17 Dec 2025

Vedanta Aluminium Uses 1.57 bn Units of Green Energy in FY25

Vedanta Aluminium, India’s largest aluminium producer, recently reported consumption of 1.57 billion units of renewable energy in FY25, marking a significant milestone in its 2030 decarbonisation roadmap. The company also achieved an 8.96 per cent reduction in greenhouse gas (GHG) emissions intensity compared to FY21, reinforcing its leadership in India’s low-carbon manufacturing transition. During FY25, Vedanta Aluminium expanded its renewable energy portfolio through long-term power purchase agreements, strengthening its strategy to source nearly 1,500 MW of renewable power over the lon..

Real Estate

17 Dec 2025

Oberoi Group to Develop Luxury Resort at Makaibari Tea Estate

EIH Limited, the flagship company of The Oberoi Group, has announced the signing of a management agreement to develop an Oberoi luxury resort at the iconic Makaibari Tea Estate in Darjeeling. The project marks a key milestone in the Group’s long-term strategy of creating distinctive hospitality experiences in rare and environmentally significant locations. Established in 1859, Makaibari is one of the world’s oldest tea estates and is globally recognised for its Himalayan landscape, primary forests and exceptional biodiversity. Spread across 1,236 acres, the estate houses one of the world�..

Real Estate

17 Dec 2025

GHV Infra Secures Rs 1.09 Bn EPC Order in Jamshedpur

GHV Infra Projects Ltd, a fast-growing EPC company in India’s infrastructure and construction sector, has recently secured a Rs 1.09 billion work order in Jamshedpur, Jharkhand. Awarded by a reputed group entity, the contract covers end-to-end civil construction, mechanical, electrical and plumbing (MEP) systems, along with high-quality finishing works for a large building development. The project will be executed over a 30-month period, with defined benchmarks for quality, safety and timely delivery. The order strengthens GHV Infra’s footprint in Jamshedpur, a key industrial hub known fo..