ISA 75×50×6 Weight, Dimensions and IS 808 Properties
ISA 75×50×6 weighs 5.7 kg per metre as per IS 808:1989.
- One 6-metre length weighs 34.2 kg · one 12-metre length weighs 68.4 kg
- Long leg 75 mm · short leg 50 mm · thickness 6 mm · area 7.2 cm²
- Maximum principal moment of inertia Iuu = 45.68 cm⁴
ISA 75×50×6 is a standard unequal-leg angle in IS 808:1989. At 5.7 kg/m with a 75 mm long leg and 50 mm short leg, it is used for purlin and rafter cleats in medium industrial sheds, secondary beam seating angles, bracing connections at column bases, and staircase stringer support angles.
ISA 75×50×6 Weight Calculator
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ISA 75×50×6 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Long leg | A | mm | 75 |
| Short leg | B | mm | 50 |
| Thickness | t | mm | 6 |
| Cross-sectional area | A | cm² | 7.2 |
| Mass per metre | — | kg/m | 5.7 |
| Centroid from back of long leg | Cxx | cm | 1.8 |
| Centroid from back of short leg | Cyy | cm | 0.95 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 42.1 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 10.16 |
| Moment of inertia (u–u, max principal) | Iuu | cm⁴ | 45.68 |
| Moment of inertia (v–v, min principal) | Ivv | cm⁴ | 6.58 |
| Elastic section modulus (x–x) | Zxx | cm³ | 8.12 |
| Elastic section modulus (y–y) | Zyy | cm³ | 2.92 |
| Radius of gyration (u–u) | ruu | cm | 2.52 |
| Radius of gyration (v–v) | rvv | cm | 0.96 |
| Tangent of principal axis angle | tan α | — | 0.329 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). x–x axis is parallel to the long leg; y–y axis is parallel to the short leg; u–u is the maximum principal axis at angle α to x–x. Mass tolerance: ±3% per piece per IS 808.
Common Applications of ISA 75×50×6
ISA 75×50×6 is used for purlin and rafter cleats in medium industrial sheds, secondary beam seating angles, bracing connections at column bases, and staircase stringer support angles. General steel merchants and angle stockists carry this size in IS 2062 E250 grade in 6 m and 12 m lengths. JSPL, SAIL, and RINL (Vizag Steel) all roll this designation to IS 808:1989 as standard stock.
Worked Example
A fabricator in Nagpur needs 50 rafter cleats for a 20 m × 40 m industrial shed using ISA 75×50×6, each 200 mm long. Total length = 50 × 0.2 = 10.0 m. Weight = 10.0 × 5.7 = 57.0 kg. At ₹63,000 per tonne (Nagpur, May 2026), material cost is approximately ₹3,591 before cutting charges.
Related ISA Unequal Angle Sections
Compare with adjacent sizes: ISA 65×50×6 (5.2 kg/m) · ISA 75×50×8 (7.4 kg/m). For all ISA unequal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 75×50×6 per metre?
ISA 75×50×6 weighs 5.7 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 34.2 kg. For a 12-metre length, total weight is 68.4 kg.
ISA 75×50×6 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 75×50×6 ka weight 5.7 kg/m hota hai. 6 metre ki ek length ka total weight 34.2 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 75×50×6?
ISA 75×50×6 per IS 808:1989 has a long leg of 75 mm, short leg of 50 mm, thickness of 6 mm, and cross-sectional area of 7.2 cm².
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