SAIL Steel Weight Chart — TMT Bars and Structural Sections
The SAIL steel weight chart complies strictly with Indian standard IS 1786:2008 for TMT bars and IS 808:1989 for structural sections. A standard 12mm SAIL TMT bar weighs 0.888 kg/m.
- TMT Bar standard weight calculation formula is D² ÷ 162.27
- SAIL SeQR (their primary TMT brand) is widely specified in government PWD and NHAI projects
- Standard length of SAIL TMT is 12 metres per bar
When working on government or large-scale infrastructure projects in India, SAIL steel is often a mandatory specification. Because SAIL adheres so strictly to Bureau of Indian Standards (BIS) tolerances, calculating the sail steel weight chart using theoretical formulas guarantees accurate procurement estimating without shortfalls.
Formula for TMT Bar Weight
Formula: Weight (kg/m) = D² ÷ 162.27
- D
- Nominal diameter of the TMT bar, in millimetres
- 162.27
- Constant derived from π/4 × density of steel (7850 kg/m³)
SAIL TMT Bar Weight Chart (IS 1786)
The standard sail tmt bar weight chart provides the exact kg/m multipliers needed to convert running length into metric tonnes. These weights apply to all SAIL TMT grades, including Fe 500D and SAIL SeQR 550D.
| Diameter (mm) | Cross-Sectional Area (mm²) | Weight per Metre (kg/m) | Weight per 12m Bar (kg) |
|---|---|---|---|
| 8 | 50.3 | 0.395 | 4.74 |
| 10 | 78.6 | 0.617 | 7.40 |
| 12 | 113.1 | 0.888 | 10.66 |
| 16 | 201.1 | 1.580 | 18.96 |
| 20 | 314.2 | 2.466 | 29.59 |
| 25 | 490.9 | 3.853 | 46.24 |
| 28 | 615.8 | 4.834 | 58.01 |
| 32 | 804.2 | 6.313 | 75.76 |
Tolerance on mass: ±7% for 8–10mm, ±5% for 12–16mm, and ±3% for 20mm and above, as per IS 1786:2008.
Worked Example: Government Bridge Project
A civil contractor in Chhattisgarh is preparing the material takeoff for a state highway bridge. The structural drawings require 600 full lengths (12 metres each) of 16mm SAIL TMT bars for the primary reinforcement.
First, find the unit weight from the chart: 16mm bar = 1.580 kg/m.
Calculate the total length: 600 pieces × 12m = 7,200 metres.
Total weight calculation: 7,200m × 1.580 kg/m = 11,376 kg.
The contractor must order exactly 11.38 tonnes of 16mm SAIL steel. This precise calculation prevents over-ordering while ensuring compliance with PWD material requirements.
SAIL Structural Steel Sections
Beyond TMT, SAIL is India's largest producer of heavy structural sections. Their structural steel weight exactly matches the IS 808 standard weights. Below is a reference chart for common SAIL ISMB (Indian Standard Medium Weight Beams) sections.
| Designation | Weight per Metre (kg/m) | Depth (mm) | Flange Width (mm) |
|---|---|---|---|
| ISMB 100 | 10.6 | 100 | 75 |
| ISMB 125 | 13.1 | 125 | 75 |
| ISMB 150 | 14.9 | 150 | 80 |
| ISMB 175 | 19.6 | 175 | 90 |
| ISMB 200 | 25.4 | 200 | 100 |
| ISMB 250 | 37.3 | 250 | 125 |
| ISMB 300 | 44.2 | 300 | 140 |
Tolerance on mass: ±2% per piece, ±1% per consignment, as per IS 808:1989.
If your project mandates other structural elements, see our full ISMC Channel and ISA Angle charts.
Frequently Asked Questions
What is the weight of a SAIL 12mm TMT bar per meter?
A SAIL 12mm TMT bar weighs exactly 0.888 kg per meter, following the standard D²/162.27 formula mandated by IS 1786. Therefore, a standard 12-meter length of 12mm SAIL sariya will weigh 10.66 kg.
SAIL ka sariya weight kaise nikale?
SAIL ka sariya weight nikalne ke liye standard formula D² ÷ 162.27 ka istemal karein, jahan D bar ki diameter (mm) hoti hai. For example, 16mm ke liye: 16 × 16 ÷ 162.27 = 1.577 kg/m (rounded to 1.580 kg/m). Isko length se multiply karke total weight calculate kar sakte hain.
Does SAIL steel have the same weight as other brands?
Yes, the theoretical weight of SAIL steel is identical to other premium Indian brands like Tata Tiscon or JSW Neosteel. All branded structural steel and TMT bars in India are manufactured to the specific densities and dimensions required by the Bureau of Indian Standards (BIS).
How do I calculate SAIL structural steel weight?
To calculate SAIL structural steel weight, look up the section's kg/m value from the IS 808 chart (e.g., ISMB, ISMC, ISA) and multiply it by the total running length in meters. You can also use our free Metal Weight Calculator by entering the cross-section dimensions directly.
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