ISMC 400 Weight, Dimensions and IS 808 Properties
ISMC 400 weighs 49.4 kg per metre as per IS 808:1989.
- One 6-metre length weighs 296.4 kg · one 12-metre length weighs 592.8 kg
- Web height 400 mm · flange width 100 mm · web thickness 8.6 mm
- Cross-sectional area 63.00 cm² · Ixx = 19306.0 cm⁴
ISMC 400 is the largest standard channel in IS 808:1989. At 49.4 kg/m with a 400 mm web and 100 mm flange, it is a specialist section used in heavy industrial applications — large crane runway girders, heavy transfer beams, and deep channel assemblies where an I-beam is impractical.
ISMC 400 Weight Calculator
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ISMC 400 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Web height | h | mm | 400 |
| Flange width | b | mm | 100 |
| Web thickness | tw | mm | 8.6 |
| Flange thickness | tf | mm | 15.3 |
| Cross-sectional area | A | cm² | 63.00 |
| Mass per metre | — | kg/m | 49.4 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 19306.0 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 328.4 |
| Elastic section modulus (x–x) | Zxx | cm³ | 965.3 |
| Elastic section modulus (y–y) | Zyy | cm³ | 44.4 |
| Radius of gyration (x–x) | rxx | cm | 17.5 |
| Radius of gyration (y–y) | ryy | cm | 2.28 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). Mass tolerance: ±2.5% per piece per IS 808.
Common Applications of ISMC 400
ISMC 400 is used for very heavy EOT crane runway girders (30 tonne and above), transfer beams over large openings in heavy industrial buildings, and special structural channel assemblies. At 49.4 kg/m it is almost exclusively a project-specific order item — SAIL Bhilai is the primary producer in India. Confirm availability and delivery schedule directly with the mill or authorised distributor before specifying.
Worked Example
A project engineer in Nagpur needs 4 runway girders of ISMC 400, each 12 m long, for a 35-tonne EOT crane in a heavy forging shop. Total length = 4 × 12 = 48 m. Weight = 48 × 49.4 = 2,371.2 kg (2.371 tonnes). At a market rate of ₹60,000 per tonne (Nagpur, May 2026), the material cost is approximately ₹1,42,270 before fabrication.
Related ISMC Sections
Compare with the next smaller size: ISMC 350 (43.2 kg/m). No larger standard ISMC in IS 808:1989. For all ISMC sizes see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISMC 400 per metre?
ISMC 400 weighs 49.4 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 296.4 kg. For a 12-metre length, total weight is 592.8 kg.
ISMC 400 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISMC 400 ka weight 49.4 kg/m hota hai. 6 metre ki ek length ka total weight 296.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISMC 400?
ISMC 400 per IS 808:1989 has a web height of 400 mm, flange width of 100 mm, web thickness of 8.6 mm, and flange thickness of 15.3 mm. The cross-sectional area is 63.00 cm².
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