TMT stands for Thermo-Mechanically Treated. These are high-strength steel reinforcement bars used inside concrete structures (RCC). During manufacturing, the bars go through a special heat treatment — creating a hard outer surface with a soft, ductile inner core. This gives TMT bars far superior strength, flexibility, and earthquake resistance compared to ordinary steel bars.
At Magnus Steels, we supply ISI-certified TMT bars conforming to ISI 1786:2008 standards — available in grades Fe 500, Fe 500D, and Fe 550D, in sizes 8mm to 32mm.
TMT bars are the backbone of every concrete structure. Here is where they are used:
Heavy-duty 16mm–32mm bars form the base of every structure, bearing the full load of the building.
12mm–20mm bars in vertical columns transfer loads from slabs and beams down to the foundation.
8mm and 10mm bars in a grid pattern inside roof slabs distribute the load evenly and prevent cracking.
12mm–16mm bars run horizontally in beams and lintels above doors and windows.
| Diameter | Grade | Price Per Kg | Price Per Ton |
|---|---|---|---|
| 8mm | Fe 500 / Fe 500D | ₹60 – ₹73 | ₹60,000 – ₹73,000 |
| 10mm | Fe 500 / Fe 500D | ₹59 – ₹72 | ₹59,000 – ₹72,000 |
| 12mm | Fe 500 / Fe 500D | ₹59 – ₹72 | ₹59,000 – ₹72,000 |
| 16mm | Fe 500 / Fe 500D | ₹59 – ₹72 | ₹59,000 – ₹72,000 |
| 20mm+ | Fe 550 / Fe 600 | ₹62 – ₹75 | ₹62,000 – ₹75,000 |
| Grade | Best For | Size Range |
|---|---|---|
| Fe 500 | General construction | 8mm – 32mm |
| Fe 500D ⭐ | Homes & earthquake zones — Most recommended for Tamil Nadu | 8mm – 32mm |
| Fe 550D | High-rise & industrial buildings | 8mm – 32mm |
Choosing the right TMT bars is one of the most important decisions when building your home in Coimbatore. Grade, size, brand, and supplier directly affect the safety and cost of your structure.
At Magnus Steels we make it simple — ISI-certified Fe 500D TMT bars, transparent pricing, and 24-hour delivery across Coimbatore, Tirupur, and Erode.