ISA 65×50×6 Weight, Dimensions and IS 808 Properties
ISA 65×50×6 weighs 5.2 kg per metre as per IS 808:1989.
- One 6-metre length weighs 31.2 kg · one 12-metre length weighs 62.4 kg
- Long leg 65 mm · short leg 50 mm · thickness 6 mm · area 6.59 cm²
- Maximum principal moment of inertia Iuu = 33.66 cm⁴
ISA 65×50×6 is a standard unequal-leg angle in IS 808:1989. At 5.2 kg/m with a 65 mm long leg and 50 mm short leg, it is used for heavier-duty secondary bracing and connection angles where the thicker 6 mm wall provides better weld root than the 5 mm variant, and for girt connection cleats on medium industrial sheds.
ISA 65×50×6 Weight Calculator
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ISA 65×50×6 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Long leg | A | mm | 65 |
| Short leg | B | mm | 50 |
| Thickness | t | mm | 6 |
| Cross-sectional area | A | cm² | 6.59 |
| Mass per metre | — | kg/m | 5.2 |
| Centroid from back of long leg | Cxx | cm | 1.6 |
| Centroid from back of short leg | Cyy | cm | 1.1 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 28.7 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 10.93 |
| Moment of inertia (u–u, max principal) | Iuu | cm⁴ | 33.66 |
| Moment of inertia (v–v, min principal) | Ivv | cm⁴ | 5.97 |
| Elastic section modulus (x–x) | Zxx | cm³ | 6.41 |
| Elastic section modulus (y–y) | Zyy | cm³ | 3.08 |
| Radius of gyration (u–u) | ruu | cm | 2.26 |
| Radius of gyration (v–v) | rvv | cm | 0.95 |
| Tangent of principal axis angle | tan α | — | 0.522 |
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 65×50×6
ISA 65×50×6 is used for heavier-duty secondary bracing and connection angles where the thicker 6 mm wall provides better weld root than the 5 mm variant, and for girt connection cleats on medium industrial sheds. 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 Pune needs 40 girt connection cleats on a medium industrial shed using ISA 65×50×6, each 1500 mm long. Total length = 40 × 1.5 = 60.0 m. Weight = 60.0 × 5.2 = 312.0 kg. At ₹63,000 per tonne (Pune, May 2026), material cost is approximately ₹19,656 before cutting charges.
Related ISA Unequal Angle Sections
Compare with adjacent sizes: ISA 65×50×5 (4.4 kg/m) · ISA 75×50×6 (5.7 kg/m). For all ISA unequal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 65×50×6 per metre?
ISA 65×50×6 weighs 5.2 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 31.2 kg. For a 12-metre length, total weight is 62.4 kg.
ISA 65×50×6 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 65×50×6 ka weight 5.2 kg/m hota hai. 6 metre ki ek length ka total weight 31.2 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 65×50×6?
ISA 65×50×6 per IS 808:1989 has a long leg of 65 mm, short leg of 50 mm, thickness of 6 mm, and cross-sectional area of 6.59 cm².
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