What is TMT?
TMT stands for Thermo-Mechanical Treatment, a process critical to producing high-quality steel rebars. As defined by the Bureau of Indian Standards under ISI: 1786-1985 (reaffirmed in 2004), this advanced technology has revolutionized deformed bar production by meeting stringent structural requirements.
Microalloying elements such as Niobium (Nb), Vanadium (V), Titanium (Ti), and Boron (B), either individually or in combination, play a vital role in enhancing the properties of TMT bars. The thermo-mechanical treatment process ensures superior strength, flexibility, and durability, making TMT rebars indispensable for modern construction.
Why Choose Our TMT Rebars in Chennai and South India?
With over five decades of industry experience, we are a trusted name in the distribution of TMT rebars, primarily in Chennai. However, our capabilities extend beyond Chennai—we can supply high-quality TMT bars to any location across South India.
Known for our commitment to quality, our TMT bars stand out for their:
- High Strength
- Superior Ductility
- Excellent Bendability
- Enhanced Weldability
Our TMT bars undergo advanced processes such as:
- HYQST (High Yield Quenched and Self Tempered) technology using the METCS (Morgan Enhanced Temperature Control System) developed by Morgan USA.
- MECTHERM (Rapid Water Quenching System) designed by MECON LIMITED.
These processes result in bars with exceptional mechanical properties, making them ideal for a wide range of construction projects, whether in Chennai or anywhere in South India.
Key Factors for High-Quality TMT Bars
The quality of TMT bars is determined by:
- Raw Material Quality: Only premium-grade raw materials are used.
- State-of-the-Art Mills: Automated and well-designed mills ensure precision.
- Advanced Quenching and Tempering: Cutting-edge technology enhances strength and durability.
Each bar is rigorously tested for properties like yield strength, tensile strength, and elongation, ensuring they meet the highest standards for safety and performance.
We Supply TMT Rebars Across South India
While we are based in Chennai, our robust distribution network allows us to deliver TMT rebars to any part of Tamil Nadu, Kerala, Karnataka, Andhra Pradesh, and Telangana. No matter your project’s location, we ensure timely delivery and unmatched quality.
IS: 1786-1985 (Reaffirmed 2004) Fe-500, Fe-500 D, Fe-550, Fe-550 D, and Fe-600
| Diameter | Weight per Meter (kg/mt) | Tolerance % |
|---|---|---|
| 8 mm | 0.395 | +/-7 |
| 10 mm | 0.617 | +/-7 |
| 12 mm | 0.888 | +/-5 |
| 16 mm | 1.579 | +/-5 |
| 20 mm | 2.466 | +/-3 |
| 25 mm | 3.854 | +/-3 |
| 28 mm | 4.83 | +/-3 |
| 32 mm | 6.314 | +/-3 |
| 36 mm | 7.99 | +/-3 |
| 40 mm | 9.86 | +/-3 |
Product Grades of TMT Steel Bars
When selecting TMT steel bars for your construction project, understanding their grades is crucial. Below are the commonly used grades and their unique properties:
Fe-500 Grade TMT Bars
- Yield Strength: Minimum of 500 N/mm².
- Properties:
- Easy bendability due to regulated manufacturing processes.
- High resistance to rust and excellent welding strength.
- Cost-effective, offering 20% savings compared to Fe-415 due to superior structural strength.
- Requires fewer TMT bars for the same load-bearing capacity, reducing overall material usage.
- Applications: Ideal for general-purpose construction projects
Fe-500 D Grade TMT Bars
- Yield Strength: Minimum of 500 N/mm² with high ductility (denoted by 'D').
- Properties:
- Higher elongation percentage, making it earthquake-resistant.
- Preserves steel integrity even under seismic shocks.
- Applications: Recommended for structures in earthquake-prone areas.
Fe-550 Grade TMT Bars
- Yield Strength: Minimum of 550 N/mm².
- Properties:
- Suitable for construction in marine, coastal, and underground environments.
- 10% cost savings compared to Fe-500 due to superior strength.
- Reduces the number of bars needed for structural stability.
- Applications: used for heavy-load construction projects.
Fe-550 D Grade TMT Bars
- Yield Strength: Minimum of 550 N/mm² with enhanced ductility.
- Properties:
- Exceptional weldability and higher ultimate strength.
- Vibration and earthquake-resistant, making it ideal for large structures.
- Applications: Used in high-rise buildings, dams, bridges, and other long-span structures.
| CHEMICAL PROPERTIES (IS 1786:2008) | ||||
|---|---|---|---|---|
| ELEMENTS (Maximum%) | Fe-500 | Fe-500 D | Fe-550 | Fe-550 D |
| Carbon% | 0.30 | 0.25 | 0.30 | 0.25 |
| Sulphur% | 0.055 | 0.040 | 0.055 | 0.040 |
| Phosphorus% | 0.055 | 0.040 | 0.050 | 0.040 |
| Sulphur and phosphorus% | 0.105 | 0.075 | 0.100 | 0.075 |
| MECHANICAL PROPERTIES (IS 1786:2008) | ||||
|---|---|---|---|---|
| PROPERTY | Fe-500 | Fe-500 D | Fe-550 | Fe-550 D |
| Yield strength (N/mm2) | 500 | 500 | 550 | 550 |
| Ultimate Tensile Strength, Min (N/mm2) | 545 | 565 | 585 | 600 |
| Elongation Min (%) | 12 | 16 | 10 | 14.5 |
TMT Steel Bar Weight Calculator
A TMT steel bar weight calculator is an essential tool for:
- Civil contractors
- Engineers
- Architects
- Builders
This tool simplifies the estimation of steel bar requirements by calculating weight based on:
- Number of rods or pieces
- Weight in kilograms (kg)
- Metric tons (mt)
Why Use It?
Most engineers and contractors recommend using the weight-based method for better accuracy and cost efficiency when purchasing TMT bars for construction.
Why Choose the Right TMT Grade?
Selecting the appropriate TMT grade ensures:
- Improved structural integrity
- Cost savings through optimized material usage
- Resistance to environmental and seismic stresses
Frequently Asked Questions (FAQs) About TMT Steel Bar Weight
- What is the Formula to Calculate the Weight of a Steel Bar?
- What’s the Typical Weight of a Steel Bar?
- How Do You Calculate the Steel Bar Weight Per Meter?
- What is the Unit for the Weight of a Steel Bar?
Why Understanding Steel Bar Weight is Important?
Accurately calculating the weight of TMT steel bars is essential for:
- Optimizing material usage in construction projects
- Cost estimation and budgeting
- Ensuring structural stability and compliance with project requirements
CRS TMT Rebars: Superior Corrosion Resistance for Durable Structures
Corrosion-Resistant Steel (CRS) TMT Rebars are designed to withstand extreme environments, ensuring durability and longevity in critical infrastructure projects. These rebars undergo rigorous testing as per ASTM standards for various corrosion-resistant properties, including:
- Immersion Test
- Salt Spray Test
- Exposure Test
- Dioxide Test
- Dynamic Test
The results demonstrate that CRS TMT Rebars boast a Corrosion Resistant Index (CRI) of 1:7 minimum, significantly outperforming standard TMT rebars.
Applications of CRS TMT Rebars
CRS TMT Rebars are ideal for demanding construction projects that require enhanced corrosion resistance. They meet the specifications of IS: 1786-1985 (Reaffirmed 2004) and are available in grades Fe-500, Fe-500 D, Fe-550, Fe-550 D, and Fe-600.
Best Applications Include:
- Oil & Gas Exploration Sites: Withstand harsh chemical and environmental exposure.
- Bridge & Dam Construction: Ensure long-term structural stability in water-intensive environments
- Highway & Flyover Construction: Provide resilience to weathering and heavy loads.
- Sea Port Construction: Resist saline water corrosion effectively.
- Jetty Construction: Perform reliably in marine conditions.
- Terminal Construction: Ensure safety and longevity in critical transport hubs.
- Thermal & Hydel Power Stations: Deliver strength and resistance to heat or moisture.
- Industrial Structures: Enhance durability in chemical-prone environments.
- Versatility in Applications: Ensure safety in locations exposed to hazardous materials.
Why Choose CRS TMT Rebars?
- Unmatched Corrosion Resistance: CRS rebars significantly reduce rusting, enhancing the lifespan of structures.
- Compliance with Standards: Tested as per ASTM and IS: 1786-1985 standards.
- Versatility in Applications: Suitable for a wide range of industrial and infrastructure projects.