ISMC 75 Weight, Dimensions and IS 808 Properties
ISMC 75 weighs 6.1 kg per metre as per IS 808:1989.
- One 6-metre length weighs 36.6 kg · one 12-metre length weighs 73.2 kg
- Web height 75 mm · flange width 40 mm · web thickness 4.4 mm
- Cross-sectional area 7.71 cm² · Ixx = 46.1 cm⁴
ISMC 75 is the smallest standard medium-weight channel in IS 808:1989. At 6.1 kg/m it is used for light cable tray supports, shelving frames, minor secondary purlins, and equipment guards where a small C-section with defined sectional properties is required.
ISMC 75 Weight Calculator
Enter the total length in metres to calculate weight.
ISMC 75 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Web height | h | mm | 75 |
| Flange width | b | mm | 40 |
| Web thickness | tw | mm | 4.4 |
| Flange thickness | tf | mm | 7.3 |
| Cross-sectional area | A | cm² | 7.71 |
| Mass per metre | — | kg/m | 6.1 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 46.1 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 9.5 |
| Elastic section modulus (x–x) | Zxx | cm³ | 12.3 |
| Elastic section modulus (y–y) | Zyy | cm³ | 3.4 |
| Radius of gyration (x–x) | rxx | cm | 2.45 |
| Radius of gyration (y–y) | ryy | cm | 1.11 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). Mass tolerance: ±2.5% per piece per IS 808.
Common Applications of ISMC 75
ISMC 75 is primarily used for non-structural and light secondary applications — cable management trays, electrical panel frames, light shelving and racking, small brackets, and motor guards. Its 75 mm web height makes it the lightest stocked IS 808 channel in most Indian steel yards. SAIL and JSW Steel both roll ISMC 75 to IS 808:1989 in IS 2062 E250 grade.
Worked Example
A panel builder in Pune needs 24 pieces of ISMC 75, each 2.4 m long, for cable tray supports inside an electrical substation. Total length = 24 × 2.4 = 57.6 m. Weight = 57.6 × 6.1 = 351.4 kg (0.351 tonnes). At a market rate of ₹58,000 per tonne (Pune, May 2026), the material cost is approximately ₹20,380 before cutting and delivery.
Related ISMC Sections
No smaller ISMC section in IS 808:1989. Compare with the next size up: ISMC 100 (9.2 kg/m). For all ISMC sizes see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISMC 75 per metre?
ISMC 75 weighs 6.1 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 36.6 kg. For a 12-metre length, total weight is 73.2 kg.
ISMC 75 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISMC 75 ka weight 6.1 kg/m hota hai. 6 metre ki ek length ka total weight 36.6 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISMC 75?
ISMC 75 per IS 808:1989 has a web height of 75 mm, flange width of 40 mm, web thickness of 4.4 mm, and flange thickness of 7.3 mm. The cross-sectional area is 7.71 cm².
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