Compare Vizag, Tata Tiscon, Agni, ARS, Amman & more. Fe500D and Fe550D grade rates per kg and per ton. Updated daily from our live inventory.
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The two most common TMT grades in Chennai are Fe500D and Fe550D. Both are BIS ISI:1786 certified and suitable for RCC construction. Here's a detailed comparison to help you choose:
| Property | Fe500D | Fe550D |
|---|---|---|
| Yield Strength (min) | 500 N/mm² | 550 N/mm² |
| Ultimate Tensile Strength | 565 N/mm² min | 600 N/mm² min |
| Elongation (ductility) | ≥16% | ≥14.5% |
| Price premium over Fe500D | Base price | +₹2–₹4 per kg |
| Best suited for | General residential RCC | High-rise, earthquake zones |
| IS Standard | ISI:1786 | ISI:1786 |
| Usage in Chennai | Most common for 1–4 floors | Preferred for 5+ floors |
All TMT brands sold by BuildingNeeds carry BIS ISI:1786 certification. Here's how the major brands compare on key parameters that matter for Chennai construction:
| Brand | Origin | Best For | Price Tier | Availability |
|---|---|---|---|---|
| Vizag (RINL) | Government steel plant, Vizag | Large projects, bridges, high-rise | Premium | Excellent |
| Tata Tiscon | Tata Steel, pan-India | Residential, commercial | Premium | Excellent |
| Agni Steel | Tamil Nadu (local) | Residential construction | Mid | Very Good |
| ARS Steel | Tamil Nadu | General residential, commercial | Mid | Good |
| Amman Steel | Tamil Nadu | General residential | Economy–Mid | Good |
| Thulsyan TMT | Gujarat (Thulsyan group) | Cost-effective residential | Economy–Mid | Good |
When buying TMT steel bars in Chennai, here are key quality checks you should perform to ensure you are getting genuine ISI:1786 certified material:
1. BIS mark on the bar: Every genuine TMT bar must have the BIS certification mark rolled into the bar surface. Look for "BIS ISI:1786" rolled text along with the grade (Fe500D or Fe550D) and manufacturer code.
2. Mill test certificate (MTC): Always ask your supplier for the Mill Test Certificate from the manufacturer. This document contains the chemical composition and mechanical test results for the specific batch.
3. Visual inspection: Quality TMT bars should have uniform ribs (transverse ribs) along the full length, no surface cracks or seams, consistent diameter, and no excessive rust or scale.
4. Bend test: A simple site test — a quality Fe500D bar should bend 180° around a pin of diameter 4× bar diameter without cracking. This checks ductility.
| Bar Diameter | Weight (kg/m) | Typical Use in House Construction |
|---|---|---|
| 8mm | 0.395 kg/m | Stirrups in beams & columns, slab distribution steel |
| 10mm | 0.617 kg/m | Slab main reinforcement, ring beams |
| 12mm | 0.888 kg/m | Slab main bar, secondary beams, lintel |
| 16mm | 1.578 kg/m | Beams (main bar), plinth beams |
| 20mm | 2.467 kg/m | Columns (main bar), heavy beams |
| 25mm | 3.854 kg/m | Heavy columns, foundation rafts |
| 32mm | 6.313 kg/m | Large columns, industrial foundations |