The definitive reference for 50x50x5 angle weight per meter and the complete MS equal angle (ISA) weight chart in kg per metre — covering every standard size from 20×20×3 mm to 100×100×12 mm as per IS 808:1989. Free reference for fabricators, contractors, and project engineers across India.
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Send EnquiryFill the contact form Join WhatsApp ChannelDaily rate updatesThis page answers the most searched question in fabrication procurement: what is the 50x50x5 angle weight per meter? The answer is 3.77 kg/m as per IS 808:1989. But knowing one value is rarely enough. This reference provides the complete MS equal angle weight chart in kg per metre for all standard ISA sizes — from 20×20×3 mm to 100×100×12 mm — along with the formula, worked examples, thickness selection guidance, and a practical buying guide. All values are based on IS 808:1989 dimensions at the standard steel density of 7.85 g/cm³.
Indian Standard Angle (ISA) • IS 808:1989 • Hot Rolled Structural Steel
An MS equal angle — designated ISA (Indian Standard Angle) in engineering drawings — is an L-shaped hot-rolled structural steel section with two equal legs meeting at a 90-degree internal angle. It is one of the most widely used structural and fabrication steel sections in India. The 50x50x5 angle weight per meter of 3.77 kg/m comes from this specific geometry: 50mm legs, 5mm thickness, hot-rolled to IS 808 dimensions.
MS angles are produced by hot rolling: a billet of mild steel is heated to rolling temperature and progressively shaped through a series of roll passes until the L-shaped cross-section is formed. The finished section is straightened, cut to length — typically 6 metres per piece — and bundled for dispatch.
Unlike square hollow sections (SHS), MS angles are open sections — they have no enclosed cavity. This makes them simpler to fabricate, easier to bolt, and highly versatile, but less efficient for torsional loads compared to hollow sections. The IS 808:1989 standard mandates specific dimensional tolerances on leg length, thickness, squareness, and straightness.
Steel is transacted by the tonne at the mill and wholesale level — but used by the piece or metre at site. Knowing the 50x50x5 angle weight per meter lets you:
• Convert a per-tonne mill price into a per-metre or per-piece fabrication cost
• Estimate total freight weight for a project consignment
• Prepare accurate Bill of Quantities (BOQ) for tendering
• Verify that the delivered material matches the declared specification
• Compare costs across different angle sizes on a per-kg or per-metre basis
Without accurate weight data, procurement estimates carry hidden risk — and that risk compounds across large orders.
Leg Length (A) • Thickness (t) • Root Radius • Toe Radius
Every value in the MS angle weight chart — including the 50x50x5 angle weight per meter — is derived from three key dimensional parameters: the leg length (A), the thickness (t), and the root radius (r1). The cross-section diagram below shows how these relate to the final weight per metre.
Leg Length (A): The external length of each leg of the angle, measured from the outer toe to the outer heel, in mm. For a 50×50×5 angle, A = 50 mm on both legs. This is the first dimension you specify when ordering.
Thickness (t): The uniform thickness of the leg in mm. This is the most important variable in the weight chart — increasing thickness from 5mm to 6mm on a 50×50 section raises the weight from 3.77 kg/m to 4.47 kg/m, a 19% increase.
Root Radius (r₁): The fillet radius at the inner junction of the two legs. IS 808 specifies this as approximately 1.0 to 1.5 times the thickness. The root radius adds material in the corner, which is why IS 808 tabulated weights are marginally higher than the simplified flat-plate formula.
The standard designation for MS equal angles in India follows this format:
ISA A × A × t
Where: ISA = Indian Standard Angle, A = leg size in mm, t = thickness in mm.
So ISA 50×50×5 means: Indian Standard Equal Angle, 50mm legs, 5mm thick. In everyday trade, this is often shortened to "50×50×5 angle" or "2×2×3/16 angle" (old inch equivalent). Always use the IS 808 metric designation on purchase orders to avoid size ambiguity.
IS 808 permits a ±3% tolerance on leg length and +3%/−5% on thickness for individual pieces. For the 50×50×5 angle, this means actual thickness may range from 4.75mm to 5.15mm. Always verify wall thickness with a caliper if the application is structurally critical.
50x50x5 Angle Weight Per Meter • Section Properties • Per-Piece Reference
The 50×50×5 MS angle is one of the most commonly stocked and used equal angle sizes in India. It sits in the "general fabrication" range — heavy enough for light structural use, light enough for everyday gate, grille, and frame work. Here is everything you need to know about this section before reading the full weight chart.
| ISA 50 × 50 × 5 — IS 808:1989 | |
|---|---|
| Leg Size (A) | 50 mm × 50 mm |
| Thickness (t) | 5 mm |
| Root Radius (r₁) | ≈ 7 mm (nominal IS 808) |
| Toe Radius (r₂) | ≈ 3.5 mm (nominal IS 808) |
| Weight per Metre | 3.77 kg/m |
| Weight per 6m Piece | 22.62 kg |
| Cross-Section Area | ≈ 4.81 cm² |
| Governing Standard | IS 808:1989 |
| Material Grade | IS 2062 E250 (typical) |
| Standard Length | 6 metres per piece |
| Size | kg/m | kg/6m piece |
|---|---|---|
| 50 × 50 × 3 | 2.26 | 13.56 |
| 50 × 50 × 5 | 3.77 ★ | 22.62 |
| 50 × 50 × 6 | 4.47 | 26.82 |
| 60 × 60 × 5 | 4.47 | 26.82 |
| 60 × 60 × 6 | 5.42 | 32.52 |
| 40 × 40 × 5 | 2.97 | 17.82 |
The 50×50×5 angle weight per meter (3.77 kg/m) is identical to the 60×60×5 angle (4.47 kg/m)? No — they differ by 19%. However, the 50×50×6 angle and the 60×60×5 angle both weigh 4.47 kg/m — the same value. Always specify both leg size and thickness to avoid confusion.
All Standard ISA Sizes • 20×20 to 100×100 mm • Thickness 3 mm to 12 mm
The following MS equal angle weight chart covers all standard ISA sizes as per IS 808:1989. Weights are given in kilograms per metre (kg/m). The 50×50×5 row is highlighted — the most searched value on this page. The chart is colour-coded: ■ lighter weights, ■ medium weights, and ■ heavier weights.
| Size ISA (mm × mm) |
3mm (kg/m) |
4mm (kg/m) |
5mm (kg/m) |
6mm (kg/m) |
8mm (kg/m) |
10mm (kg/m) |
12mm (kg/m) |
|---|---|---|---|---|---|---|---|
| → Small Angles — 20×20 to 35×35 mm | |||||||
| 20 × 20 | 0.88 | — | — | — | — | — | — |
| 25 × 25 | 1.11 | — | 1.77 | — | — | — | — |
| 30 × 30 | 1.36 | — | — | — | — | — | — |
| 35 × 35 | — | — | 2.54 | — | — | — | — |
| → Mid Angles — 40×40 to 55×55 mm | |||||||
| 40 × 40 | 1.83 | — | 2.97 | 3.52 | — | — | — |
| 45 × 45 | — | — | 3.37 | — | — | — | — |
| 50 × 50 ★ FEATURED | 2.26 | — | 3.77 | 4.47 | — | — | — |
| 55 × 55 | — | — | 4.14 | — | — | — | — |
| → Most Popular Angles — 60×60 to 80×80 mm | |||||||
| 60 × 60 | — | — | 4.47 | 5.42 | 7.09 | — | — |
| 65 × 65 | — | — | — | 5.84 | 7.70 | — | — |
| 75 × 75 | — | — | 5.65 | 6.84 | 9.00 | 11.00 | — |
| 80 × 80 | — | — | — | 7.34 | 9.63 | 11.90 | — |
| → Large & Structural Angles — 90×90 to 100×100 mm | |||||||
| 90 × 90 | — | — | — | 8.30 | 10.90 | 13.40 | — |
| 100 × 100 | — | — | — | 9.22 | 12.20 | 15.10 | 17.80 |
All values in this MS angle weight chart are nominal/theoretical weights derived from IS 808:1989 standard dimensions at steel density 7.85 g/cm³. Actual manufactured weights may vary up to ±5% on a section basis per IS tolerance provisions. For freight contracts, always verify on a weigh-bridge. For project BOQ, include a 3–5% tolerance margin above the chart value. The 50x50x5 angle weight per meter of 3.77 kg/m is the standard nominal value and is widely accepted for estimation purposes.
Standard Formula • Derivation • Three Worked Examples
You can calculate the approximate weight of any MS equal angle — including the 50x50x5 angle weight per meter — using a standard engineering formula. Understanding this formula means you can estimate non-standard sizes or verify chart values independently.
Given: A = 50 mm, t = 5 mm
Simplified formula:
Weight = 0.00785 × 5 × (2 × 50 − 5)
= 0.00785 × 5 × 95
= 0.00785 × 475
= 3.73 kg/m
IS 808 tabulated value: 3.77 kg/m (includes root and toe radius correction). The 0.04 kg/m difference (~1%) is within normal estimation tolerance. For all project estimation purposes, use the IS 808 table value of 3.77 kg/m as the 50x50x5 angle weight per meter.
Given: A = 75 mm, t = 6 mm
Simplified formula:
Weight = 0.00785 × 6 × (2 × 75 − 6)
= 0.00785 × 6 × 144
= 0.00785 × 864
= 6.78 kg/m
IS 808 tabulated value: 6.84 kg/m. Difference: ~0.9%, well within procurement tolerance. The formula reliably gives values within ±1.5% of IS 808 tabulated weights for all standard sizes — suitable for quick estimation without access to the full table.
Standard MS angles come in 6-metre lengths. To get weight per piece: multiply kg/m by 6.
50×50×5 example: 3.77 kg/m × 6 = 22.62 kg per piece.
For a truckload of 200 pieces: 200 × 22.62 = 4,524 kg = 4.52 MT.
Pieces per MT: 1,000 ÷ 22.62 = ≈ 44 pieces per MT.
Thickness Selection • Structural vs Light Use • Weight Implications
Thickness is the variable that converts an ordinary MS angle into a structural one. The same 50×50 section at 3mm, 5mm, and 6mm performs very differently — and weighs differently. The 50x50x5 angle weight per meter of 3.77 kg/m places it firmly in the general fabrication-to-light-structural range. Here is a practical guide to selecting the right thickness.
The thinnest commercially available MS angle thickness in standard sizes. Used for lightweight frames, decorative grilles, partition supports, small shelf brackets, thin fence frames, and display structures where load is minimal. A 50×50×3 angle weighs just 2.26 kg/m — easy to handle, cut, and weld but not recommended for load-bearing applications without engineering validation.
The 5mm thickness is the most commonly specified MS angle in India for gate frames, roof purlins, staircase stringers, equipment mounting brackets, vehicle chassis secondary members, and general structural work. The 50×50×5 angle at 3.77 kg/m is the industry's default reference point for mid-range angle work — strong enough for most site fabrication, available everywhere.
At 6mm, MS angles enter structural-grade performance. Required for main columns of small structures, heavy gate main frames, conveyor support main beams, transmission line tower bracing, and crane runway secondary rails. A 75×75×6 angle weighs 6.84 kg/m — sufficient for most light column applications in small fabricated structures.
Heavy-duty structural angles. Used in transmission tower legs, bridge bracing, heavy industrial structures, shipbuilding frames, crane girder web stiffeners, and heavy equipment baseplates. A 100×100×12 angle weighs 17.80 kg/m — this is specialist structural steel territory requiring design by a qualified structural engineer.
Going from 50×50×5 (3.77 kg/m) to 50×50×6 (4.47 kg/m) adds 18.6% weight and approximately the same percentage to material cost. The structural benefit — increased moment of inertia and section modulus — is meaningful only if the angle is being used as a beam or column under specific load conditions. For most gate, grille, and frame applications, the 5mm thickness is sufficient. Upgrading to 6mm "for safety" without a load calculation is an unnecessary cost increase. When in doubt, consult a structural engineer before upscaling thickness.
Construction • Fabrication • Agriculture • Infrastructure
MS equal angles are among the most versatile structural steel sections in Indian fabrication. Their L-shaped cross-section makes them easy to connect, bolt, and weld at corners — ideal for framed structures and bracing. Here is how different sizes from the weight chart, including the 50×50×5 at 3.77 kg/m, map to real-world applications.
Greenhouse framing, shade net structure purlins, cattle shed roof support angles, borewell platform frames, farm gate main members. 50×50×5 at 3.77 kg/m is the standard choice for agricultural gate frames.
Ground-mounted solar panel row support angles (50×50×5), mounting rail clip brackets (40×40×5), sub-station equipment frames (75×75×6). Hot-dip galvanised ISA preferred for all outdoor applications to resist corrosion.
Electricity transmission line towers use angles from 65×65×6 to 100×100×10 for leg members, bracing, and cross-arms. These require IS 2062 Grade E350 or E410 material — always verify grade with supplier and engineer.
ISA vs ISMC • When to Choose Angle Over Channel
The MS angle and MS channel are often considered for the same application — and buyers frequently ask: should I use a 50×50×5 angle at 3.77 kg/m or an equivalent channel section? Here is a direct comparison to help you decide.
| Parameter | MS Equal Angle (ISA) | MS Channel (ISMC) | Better For |
|---|---|---|---|
| Section shape | L-shaped open section — 2 equal legs | C-shaped open section — web + 2 flanges | Context-dependent |
| Weight at comparable depth | 50×50×5 ISA = 3.77 kg/m | ISMC 75 = 6.80 kg/m (deeper section) | ✔ Angle — lighter |
| Bending strength (as beam) | Lower — small moment of inertia | Higher — deeper section, larger I-value | Channel — beams |
| Connection ease at corners | Excellent — L-shape natural for corners, right-angle joints | More complex — requires gussets or coping at corners | ✔ Angle — frames |
| Torsional stability | Lower — open section, susceptible to twist | Moderate — also open section but deeper | Channel — slightly better |
| Use as purlin / rafter | Suitable for light spans (<3m typical) | Preferred for longer spans (>3m) | Channel — longer spans |
| Price per kg (general market) | Comparable to ISMC at same weight | Comparable — both are hot-rolled IS 808 sections | Similar — check current rates |
| Best use case | Frames, gates, grilles, bracing, corner joints, brackets | Purlins, beams, lintels, slide rails, overhead supports | Application-specific |
When an angle section alone lacks sufficient bending strength but a full channel is over-specified, fabricators often use two angles back-to-back (bolted or welded at regular intervals). Two 50×50×5 ISA back-to-back weighs 7.54 kg/m and approaches the stiffness of a shallow channel — at the cost of a more complex connection. This approach is common in transmission tower construction and light truss fabrication. When comparing back-to-back angle vs ISMC, always compare on section modulus (Zx) rather than weight alone.
Per-MT to Per-Metre Conversion • Avoiding Under-Specification • Procurement Checklist
MS angles are sold by the tonne at mill and wholesale level. But fabricators buy by the piece or bundle, and site supervisors estimate by the metre. The MS angle weight chart — and specifically the 50x50x5 angle weight per meter value of 3.77 kg/m — bridges these different worlds. If you cannot convert between them accurately, you cannot evaluate a supplier's quote.
Step-by-step example using 50×50×5 ISA:
Step 1: Get per-MT price from supplier.
Example: ₹69,000 per MT
Step 2: Look up weight in MS angle weight chart.
50×50×5 angle weight per meter = 3.77 kg/m
Step 3: Per-metre rate = (69,000 ÷ 1,000) × 3.77
= 69 × 3.77 = ₹260 per metre
Step 4: Per 6-metre piece = 260 × 6 = ₹1,560 per piece
With this benchmark, you can evaluate any supplier's per-piece quote directly — and know immediately if you are being under-cut with a thinner specification.
The most common procurement error with MS angles: ordering "50×50 angle" without stating the thickness. A supplier quoting 50×50×3 (2.26 kg/m) against a requirement for 50×50×5 (3.77 kg/m) is delivering 40% less steel by weight per metre — at what may appear to be a lower per-piece price but is actually a worse per-kg value.
Always specify on the purchase order: "ISA 50×50×5, IS 808:1989, IS 2062 E250, 6 metres per piece, IS mark mandatory". This single line eliminates specification ambiguity entirely.
Section: ISA 50×50×5 (Equal Angle)
Thickness: 5.0mm (IS 808 nominal)
Length: 6 metres per piece
Standard: IS 808:1989 (Dimensions)
Material: IS 2062:2011 Grade E250
Mark: IS mark mandatory on section
MTC: Mill Test Certificate required with delivery
• Bureau of Indian Standards (BIS) — IS 808:1989 — Dimensions for Hot Rolled Steel Sections (Beams, Columns, Channels, Angles)
• Bureau of Indian Standards (BIS) — IS 2062:2011 — Hot Rolled Medium and High Tensile Structural Steel (Material Grade)
• Ministry of Steel, Government of India — Steel consumption data, industry standards, and policy updates
FAQ • For Fabricators, Contractors & Steel Traders
Vishwageeta Ispat is Raipur's trusted iron and steel stockist — supplying TMT bars, MS angles (IS 808) including ISA 50×50×5 and all other sizes, ISMC channels, I-beams, MS pipes (IS 1239 & IS 4923), rectangular hollow sections, GI pipes, MS sheets, chequered plates, and all structural steel products. This 50x50x5 angle weight per meter reference guide is published as a free technical resource for contractors, fabricators, project engineers, and procurement teams across Chhattisgarh and Central India.
Need current rates on MS angles? Looking to book a consignment for your project? Our team provides mill-linked, competitive pricing on all IS 808 angle sections. Call, WhatsApp, or fill the enquiry form — we respond the same working day.