Buy Fe 550D Steel Bar Online in Hyderabad India | AFSTAR

Thermo-mechanical treatment (TMT), is a metallurgical process that integrates work hardening and heat-treatment into a single process. Critical control over levels of impurities, along with computer-controlled online heat treatment, gives AF Star TMT higher bendability, longevity & ductility far exceeding the IS 1786/08 Standards.

AF Star Fe 550D TMT rebars are high-strength reinforcement bars that are used in construction projects to enhance the durability and strength of structures. These TMT bars are manufactured by AF Star Steel, a leading steel manufacturer in India, and are made with the latest technology to ensure superior quality and performance.

From molten steel to unparalleled strength:

The making of AF Star Fe 550D TMT bars

The making process of AF Star Fe 550D TMT bars starts with the selection of high-quality raw materials. The raw materials are carefully chosen to ensure that they meet the required chemical composition and are free from any impurities. The raw materials are then melted in an electric arc furnace at a temperature of around 1600°C.

Once the raw materials are melted, they are poured into a continuous casting machine, which produces billets of the required size. These billets are then sent through a series of rolling mills, which gradually reduce their size and shape them into TMT bars.

During the rolling process, the TMT bars are subjected to a controlled cooling process. This process involves passing the bars through a series of water-cooled pipes, which rapidly cool the outer surface of the bars while leaving the core hot. This controlled cooling process gives the TMT bars their unique properties, including high strength, ductility, and resistance to corrosion.

After the bars are cooled, they are cut to the required length and subjected to a series of quality control tests to ensure that they meet the required standards. These tests include tensile testing, bend testing, and chemical analysis.

Once the TMT bars pass all the quality control tests, they are ready to be shipped to construction sites and used in a variety of applications, including building foundations, bridges, and high-rise buildings. With their superior strength and durability, AF Star Fe 550D TMT bars are a popular choice among builders and engineers for a wide range of construction projects.


AF Star TMT ReBar is used extensively in the construction industry for various applications. It is used in the construction of residential buildings, commercial complexes, bridges, dams, and other infrastructure projects. It is also used in the construction of high-rise buildings, where structural stability is of utmost importance.

The need for innovative and responsible steel manufacturers to produce commercial-grade Fe 500D & Fe 550D has arisen due to changing applications such as constructing high-rise buildings and long-span structures. These grades are significantly superior to the existing grades in terms of strength and durability. These TMT Rebars, Fe 500D & Fe 550D, have been specifically designed to create a stronger nation by utilising improved steel quality, better chemical properties, and superior rolling techniques. With increased ductility, these grades offer superior seismic resistance to all constructions based on RCC structure design


High Tensile Strength

AF Star Fe 550D TMT rebars provide high-strength of 550 MPa for building strong and durable construction projects which can withstand heavy loads and extreme weather conditions.

Excellent Ductility

AF Star Fe 550D TMT rebars have excellent ductility, making them ideal for earthquake-prone areas. The ductility of these TMT bars also ensures that they can absorb more energy before breaking, which enhances the safety and durability of the structures.

Corrosion Resistance

AF Star Fe 550D TMT rebars are resistant to corrosion, providing long-lasting protection.

Fire Resistance

It offers excellent fire resistance, which makes it ideal for construction in areas where fire hazards are a concern. It does not burn or emit toxic gases when exposed to high temperatures.


AF Star TMT Rebar offers uniformity in its properties, which ensures consistent quality and performance. It meets all the national and international standards for quality and performance.


Reduction of steel consumption

Designing structures with Fe 550D reduces the steel consumption by 12-15% with optimization, using consistent primary steel.

Reduction Bar Congestion

Using strong-grade steel means a reduction in bar diameter that results in increased bar spacing as fewer rebars are needed.

Reduction in Labour cost

Using less steel requires less labour and saves on labour cost.

Faster Construction

Less time is wasted on placing/ tying of rebars and less weight on cranes improves construction efficiency.

Bigger Savings

Since Fe 550D Rebars are stronger than other rebars, the overall steel consumption comes down leading to cost savings. It also results in increasing a Floor Space Index thus giving a monetary benefit of generating extra space.


Its superior strength and durability reduce the need for frequent maintenance and repairs, which saves money in the long run.