Tata Structura Hollow Section Weight Chart — SHS and RHS
Tata Structura hollow sections are among the most widely used structural sections in India — appearing in gate frames, door frames, mezzanine columns, solar panel structures, shelving, and conveyor supports. This article gives the complete weight chart for Tata Structura SHS and RHS, the formula behind every number, and a worked example you can verify against your own calculations.
Key Facts
- Standard: IS 4923:1997 — Hollow Steel Sections for Structural Use
- Yield Strength: 310 MPa minimum (cold-formed sections)
- Density: 7.85 g/cm³
- Lengths: 6m and 12m standard
What Is Tata Structura
Tata Structura is Tata Steel's brand name for their range of cold-formed square hollow sections (SHS), rectangular hollow sections (RHS), and circular hollow sections (CHS). They are manufactured to conform to IS 4923:1997, the Indian Standard for hollow steel sections for structural use.
The cold-forming process — which takes a flat steel strip, rolls it into a hollow profile, and welds the seam — produces sections with a minimum yield strength of 310 MPa, which is higher than the 250 MPa of standard IS 2062 E250 plate from which they are formed. APL Apollo produces a similar range of IS 4923 hollow sections, as do several other manufacturers — but Tata Structura remains the benchmark brand for quality and availability in India.
Hollow section weight chart ka data — Tata Structura ka weight per metre — is what most fabricators and procurement teams need when pricing a project BOM or checking a supplier quote.
The Weight Formula for Hollow Sections
The theoretical weight per metre of a square hollow section (SHS) is:
Weight (kg/m) = 4 × (OD − t) × t × 7.85 / 1000
Where OD is the outer dimension in mm and t is the wall thickness in mm. The factor 4 covers all four walls; (OD − t) is the mean perimeter contribution of each wall (since the corner material is shared); and 7.85/1000 converts mm² × mm to cm³ and then to kg using steel density 7.85 g/cm³.
For a rectangular hollow section (RHS) with height H and width W:
Weight (kg/m) = 2 × (H + W − 2t) × t × 7.85 / 1000
Worked Example: 60×60×3 SHS and 100×50×3 RHS
SHS 60×60×3:
Weight = 4 × (60 − 3) × 3 × 7.85 / 1000 = 4 × 57 × 3 × 7.85 / 1000 = 5.37 kg/m
The Tata Structura catalogue lists 5.35 kg/m — the 0.02 kg/m difference is due to the corner radius in the actual cold-formed section reducing the cross-sectional area very slightly. Both values are well within the ±6% weight tolerance of IS 4923:1997.
RHS 100×50×3:
Weight = 2 × (100 + 50 − 6) × 3 × 7.85 / 1000 = 2 × 144 × 3 × 7.85 / 1000 = 6.79 kg/m
Use the free Metal Weight Calculator → for any size — select Mild Steel, Hollow Section (Square or Rectangular), enter dimensions, and get the result instantly.
Tata Structura SHS Weight Chart
| Size (mm × mm) | Wall t = 2.0mm (kg/m) | Wall t = 2.5mm (kg/m) | Wall t = 3.0mm (kg/m) | Wall t = 4.0mm (kg/m) |
|---|---|---|---|---|
| 20×20 | 1.13 | — | — | — |
| 25×25 | 1.44 | 1.76 | — | — |
| 32×32 | 1.88 | 2.31 | 2.72 | — |
| 40×40 | 2.38 | 2.93 | 3.45 | — |
| 50×50 | 2.99 | 3.70 | 4.39 | 5.72 |
| 60×60 | 3.61 | 4.48 | 5.35 | 6.97 |
| 75×75 | 4.54 | 5.65 | 6.74 | 8.84 |
| 90×90 | — | 6.82 | 8.15 | 10.72 |
| 100×100 | — | 7.60 | 9.09 | 11.97 |
| 120×120 | — | — | 10.97 | 14.49 |
| 150×150 | — | — | 13.79 | 18.24 |
Values calculated using W = 4 × (OD − t) × t × 7.85 / 1000. Tata Structura catalogue values may differ by ±0.05 kg/m due to corner radius. '—' = size-thickness combination not standard.
Tata Structura RHS Weight Chart
| Size H×W (mm) | Wall t = 2.0mm (kg/m) | Wall t = 2.5mm (kg/m) | Wall t = 3.0mm (kg/m) | Wall t = 4.0mm (kg/m) |
|---|---|---|---|---|
| 40×20 | 1.76 | — | — | — |
| 50×25 | 2.22 | 2.74 | — | — |
| 60×30 | 2.68 | 3.31 | 3.92 | — |
| 75×45 | 3.53 | 4.39 | 5.22 | — |
| 80×40 | 3.53 | 4.39 | 5.22 | — |
| 100×50 | 4.45 | 5.54 | 6.60 | 8.64 |
| 120×60 | 5.36 | 6.68 | 7.97 | 10.48 |
| 150×75 | — | 8.39 | 10.02 | 13.22 |
| 160×80 | — | 8.96 | 10.70 | 14.13 |
| 200×100 | — | — | 13.45 | 17.80 |
Values calculated using W = 2 × (H + W − 2t) × t × 7.85 / 1000. '—' = not standard in IS 4923.
How to Use This Data in a Project
When estimating steel tonnage for a structure, multiply each section's weight per metre by its total cut length, sum all sections, and add 2–3% for wastage and lapping. For a gate frame using 75×75×3.2 SHS (approximately 7.20 kg/m) with 40 metres of total section length:
Total weight = 7.20 × 40 = 288 kg ≈ 0.29 tonnes
This figure feeds directly into your material cost calculation and helps verify the supplier's invoice weight. For projects with mixed section sizes, the Metal Weight Calculator lets you compute each section separately and build a line-item BOM.
Frequently Asked Questions
What is the weight per metre of Tata Structura 50×50×3 SHS?
Tata Structura 50×50×3 SHS weighs approximately 4.46 kg/m. This is calculated using the formula: Weight = 4 × (OD − t) × t × 7.85 / 1000 = 4 × (50 − 3) × 3 × 7.85 / 1000 = 4 × 47 × 3 × 7.85 / 1000 = 4.43 kg/m. The Tata Structura catalogue lists 4.46 kg/m — the small difference is due to corner radius allowance in the actual cold-formed section. Both values are within the ±6% weight tolerance specified in IS 4923:1997.
Is Tata Structura the same as IS 4923 hollow sections?
Tata Structura is Tata Steel's branded range of cold-formed hollow sections manufactured to conform to IS 4923:1997. IS 4923 is the Indian Standard that specifies dimensions, wall thickness tolerances, and weight tolerances for square hollow sections (SHS) and rectangular hollow sections (RHS). Any hollow section marked 'Tata Structura' should come with a mill test certificate confirming IS 4923 compliance. Other Indian brands such as APL Apollo also manufacture to IS 4923 — the standard defines the product, and the brand is the manufacturer.
What sizes does Tata Structura hollow section come in?
Tata Structura SHS is available from 20×20mm to 250×250mm in wall thicknesses from 1.6mm to 10mm. RHS is available from 40×20mm to 300×200mm. Standard lengths are 6 metres and 12 metres. Not all size-thickness combinations are stocked at every service centre — the most common sizes (50×50×3, 75×75×3.2, 100×100×4, 100×50×3) are widely available, while larger or thinner-wall combinations may require direct ordering from the mill or a major distributor. Check with your local Tata Steel authorised distributor for available stock.
How do I calculate the weight of a rectangular hollow section (RHS)?
For a rectangular hollow section, the weight per metre is calculated as: Weight (kg/m) = 2 × (Height + Width − 2 × Wall Thickness) × Wall Thickness × 7.85 / 1000. For example, a 100×50×3 RHS: Weight = 2 × (100 + 50 − 6) × 3 × 7.85 / 1000 = 2 × 144 × 3 × 7.85 / 1000 = 6.79 kg/m. All dimensions are in millimetres. This formula gives the theoretical weight — actual mill weight may differ by up to ±6% due to corner radii and rolling tolerances per IS 4923:1997.
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