TMT Bars

TMT steel reinforcement bars arranged in stockyard for construction supply

What are TMT Bars?

TMT bars are high-strength steel reinforcement bars shaped through thermo-mechanical treatment, a quenching process that creates a hard outer surface with a ductile inner core. Sri Durga TMT manufactures IS 1786-certified Fe 550 TMT bars in 8mm to 32mm sizes from our own continuously cast billets at our Chennai plant.

Chemical Properties
TMT reinforcement bars Chennai corrosion resistant steel supplier Tamil Nadu

Advantages of Sri Durga TMT Bars

Sri Durga TMT bars manufacturer logo Tamil Nadu steel supplier

Technical Specifications & Grades

Sri Durga’s construction grade Fe 550 TMT bars meet IS 1786 standards, available in 8mm to 32mm, trusted by contractors for bulk TMT steel bars for high-rise construction and infrastructure projects across Tamil Nadu and South India. Continuously cast billets ensure consistent grade, strength, and dimensional accuracy in every consignment.

TMT Bars Sizes & Weight Chart

Sri Durga TMT, a primary Fe 550 TMT bars manufacturer in Chennai with over three decades of steel production experience, supplies bulk TMT steel bars for contractors and infrastructure projects across South India, backed by IS 1786 certification and BIS licensing.

1Std. Wt. (Kg/Mtr.)Piece Wt. (12.200 Mtr.)Bundle Wt.Pieces
SizeMinMaxMinMaxMinMaxin Bundle
80.370 0.380 4.514 4.758 45.140 47.580 10
100.580 0.590 7.198 7.442 50.386 52.094 7
120.850 0.860 10.492 10.736 52.460 53.680 5
161.520 1.540 18.666 19.032 55.998 57.096 3
202.420 2.440 29.768 30.012 59.536 60.024 2
253.800 3.840 46.604 46.848 46.604 46.848 1
284.700 4.810 57.340 58.682 57.340 58.682 1
326.2006.30075.64076.86075.64076.8601
PropertiesIS:1786-2008SRI DURGA TMTConstituent(%)IS:1786-2008SRI DURGA TMT
Yield Stress-N/mm2(min) 550 570 Carbon(Max) 0.30 0.25
Tensile Strength-N/mm2(min) 585 630 Sulphur(Max) 0.055 0.045
TS/YS Ratio(Min) 1.06 1.10 Phosphours (Max) 0.055 0.045
Elongation %(min) 10.0 16.0 S & P(Max)0.1000.080
Total Elongation %(min)NA570 Carbon(Max) 0.30 0.25

Why Builders Choose Sri Durga TMT Bars

Sri Durga’s construction grade Fe 550 TMT bars outperform standard rebars with superior ductility, earthquake resistance, and coupler-compatible ribs, purpose-built for high-rise buildings and bridge construction in Tamil Nadu. Green Pro certified. BIS licensed. Trusted by contractors across South India. Check today’s Fe 550 TMT bars price per kg →

FAQ (Frequently Asked Questions)

What is a TMT bar?
A TMT bar is a high-strength steel with a tough outer core and softer inner core. Made using the Tempcore process, it has a martensitic rim and ferrite-pearlite center for RCC use.
TMT stands for Thermo-Mechanically Treated steel bars. They undergo controlled heat and stress to form a dual microstructure, offering strength and ductility as per IS 1786 standards.
TMT bars reinforce concrete in buildings, bridges, and dams. Ribbed surfaces improve bonding and resist forces. Sizes 8–32mm; 10–16mm for slabs, 20–25mm for beams, preventing cracks.
Fe550D is better for seismic and high-rise use due to higher ductility. Both have 550 MPa strength, but Fe550D has ≥18% elongation vs Fe550’s 14.5%, ideal for earthquake zones.
Sri Durga TMT is trusted for BIS certification, consistent quality, and Tempcore process. Made as per IS 1786, Fe550 bars offer high strength, ductility, and reliable performance.
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