TMT Steel Bars

TMT Bar Specifications & Grades

TMT (Thermo-Mechanically Treated) Bars are classified based on their strength, composition, and elongation properties. These specifications help determine their suitability for various construction projects.

1. TMT Bar Grades & Strength

TMT Bars are categorized into different grades based on their Yield Strength, Tensile Strength, and Elongation Percentage. Below are the most commonly used grades in India:

✅ Fe-500 is the most commonly used grade for construction as it balances strength and flexibility.
✅ Fe-550 & Fe-600 are used in large-scale projects where higher strength is required.

2. TMT Bar Sizes (Diameter & Weight Chart)

TMT bars come in various diameters, and their weight varies based on the standard unit length (per meter or per 12-meter bar).
✅ 8mm – 16mm bars are commonly used in beams and slabs.
✅ 20mm – 32mm bars are used for heavy structural applications like bridges and flyovers.

3. TMT Bar Composition & Features

TMT bars are made using a combination of iron, carbon, and micro-alloys like Vanadium, Chromium, and Manganese, which enhance their strength and corrosion resistance.

Key Features of TMT Bars:

✔️ High Strength & Flexibility: Ideal for earthquake-resistant structures.
✔️ Corrosion Resistance: Prevents rusting in humid environments.
✔️ Weldability: Can be easily welded without loss of strength.
✔️ Fire Resistance: Can withstand temperatures up to 600°C.
✔️ Bonding Strength: Ribbed structure ensures strong grip with concrete.

4. Choosing the Right TMT Bar for Your Project

For small homes & low-rise buildings: Fe-415 or Fe-500.
For high-rise apartments & offices: Fe-500 or Fe-550'
For bridges, highways & heavy structures: Fe-550 or Fe-600;
For earthquake-prone zones: Fe-500D or Fe-550D (higher ductility).