Sujana TMT

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Sujana TMT bars are a genre apart, and come with an offer of rich and unique attributes – high corrosive resistance, good weldability, strength, ductability etc. High quality of each TMT bar is ensured by following the world renowned Tempcore Technology from CRM, Belgium & Thermex, Germany.

The rich and unique attributes and cutting edge technologies have made Sujana TMT a reputed benchmark in long steel, and helped to become a popular long steel brand across the country. Sujana TMT (Thermo Mechanically Treated) bar is rolled out of the world’s proven “Thermax” technology.

The production process involves 3 stages of treatment – Quenching, Self-tempering and Atmospheric Cooling. Sujana TMT is processed on a world class cooling bed, one of the finest and the largest in the country. It is this process that gives Sujana TMT its unmatched qualities.

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 to form tempered martensite, while the core remain austenitic. This process is called self tampering.

Stage3 – Atmospheric cooling, where in the bar is cooled on the cooling bed, results in the austenitic core being converted into ductile ferrite-pearlite core. This gives Sujana TMT the unmatched qualities of strength and ductility.

Sujana TMT can be used for a number of high-specialty and custom construction purposes. Its high corrosion and rust resistance make it the first choice for buildings in coastal and other areas with high humidity. Its ductility and bendability on the other hand mean that it is the perfect choice for building in seismic zones and for construction that is under stress.

SMPL’s Comphrehensive Range of TMT Steel
Grades Yield (min. Mpa) UTS (min. Mpa) Elongation (min %)
BIS Sujana BIS Sujana BIS Sujana
Fe-415 415 450 485 540 14.5 24
Fe-500 500 530 545 630 12.5 18
Fe-550 550 580 585 690 8.0 16
Fe-500D 500 500 1.08 1.10 12.0 16.0
Specific
Weight
BIS Standard Sujana TMT
Tolerance
grams/mtr.
Tolerance
grams/mtr.
Size (mm) G.Mtr. min. max. min. max. Saving by Weight
8 395 367 423 367 395 7%
10 617 574 660 574 617 7%
12 888 844 932 844 888 5%
16 1580 1500 1659 1500 1580 5%
20 2470 2396 2544 2396 2470 3%
25 3850 3735 3965 3735 3850 3%
28 4830 4685 4975 4685 4830 3%
32 6310 6120 6499 6120 6310 3%
40 9850 9554 10146 9554 9850 3%
Characterstics CTD 415 Sujana TMT 500 Sujana TMT 550
Design Strength 415N/sq.mm 500N/sq.mm 550N/sq.mm
Quantity Required 1,000 MT 0854 MT 0.809 MT
Over CTD 415
% of Savings in weight
14.6% 19.15%