| Grade | Other TMT Fe 550 | Sarwottam TMT Fe 550/550D |
|---|---|---|
| Yield Stress (N/sq.mm) | >550 | >580 |
| Tensile Strength (N/sq.m) | 1.06 but TS strength not less than 585.00 N/mm2 | 1.08 but TS strength not less than 600.00 N/mm2 |
| Elongation % | >10% | >15% |
| Grade | Other TMT Fe 550 | Sarwottam TMT Fe 550/550D |
|---|---|---|
| Carbon % | 0.30 | 0.25 |
| Sulphur % | 0.055 | 0.040 |
| Phosphorus % | 0.055 | 0.040 |
| Sulphur & Phosphorus % | 0.100 | 0.075 |
| Manganese % | 0.5 - 10 | 0.5 - 10 |
| CE % | 0.42 | 0.61 |
| Specific | BIS Range Tolerance KG/mtr |
Sarwottam TMT Range Tolerance KG/mtr |
% | |||
|---|---|---|---|---|---|---|
| Size in MM | KG/mtr | Min | Max | Min | Max | |
| 8 | 0.395 | 0.367 | 0.423 | 0.370 | 0.407 | ±7 |
| 10 | 0.617 | 0.574 | 0.659 | 0.580 | 0.625 | ±7 |
| 12 | 0.888 | 0.844 | 0.932 | 0.845 | 0.920 | ±5 |
| 16 | 1.579 | 1.500 | 1.658 | 1.516 | 1.625 | ±3 |
| 20 | 2.467 | 2.400 | 2.541 | 2.408 | 2.510 | ±3 |
| 25 | 3.856 | 3.740 | 3.971 | 3.752 | 3.924 | ±3 |
| 32 | 6.313 | 6.214 | 6.502 | 6.200 | 6.480 | ±3 |