ISA 125×75×10 Weight, Dimensions and IS 808 Properties
ISA 125×75×10 weighs 14.9 kg per metre as per IS 808:1989.
- One 6-metre length weighs 89.4 kg · one 12-metre length weighs 178.8 kg
- Long leg 125 mm · short leg 75 mm · thickness 10 mm · area 18.98 cm²
- Maximum principal moment of inertia Iuu = 351.79 cm⁴
ISA 125×75×10 is a standard unequal-leg angle in IS 808:1989. At 14.9 kg/m with a 125 mm long leg and 75 mm short leg, it is used for heavily loaded bracing and connection angles in heavy industrial portal frames, crane-gantry end connections, and truss chord splice plates where the 10 mm wall thickness is required by connection design.
ISA 125×75×10 Weight Calculator
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ISA 125×75×10 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Long leg | A | mm | 125 |
| Short leg | B | mm | 75 |
| Thickness | t | mm | 10 |
| Cross-sectional area | A | cm² | 18.98 |
| Mass per metre | — | kg/m | 14.9 |
| Centroid from back of long leg | Cxx | cm | 2.87 |
| Centroid from back of short leg | Cyy | cm | 1.53 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 320.0 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 66.72 |
| Moment of inertia (u–u, max principal) | Iuu | cm⁴ | 351.79 |
| Moment of inertia (v–v, min principal) | Ivv | cm⁴ | 34.93 |
| Elastic section modulus (x–x) | Zxx | cm³ | 37.79 |
| Elastic section modulus (y–y) | Zyy | cm³ | 12.26 |
| Radius of gyration (u–u) | ruu | cm | 4.31 |
| Radius of gyration (v–v) | rvv | cm | 1.36 |
| Tangent of principal axis angle | tan α | — | 0.307 |
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 125×75×10
ISA 125×75×10 is used for heavily loaded bracing and connection angles in heavy industrial portal frames, crane-gantry end connections, and truss chord splice plates where the 10 mm wall thickness is required by connection design. 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 Hyderabad needs 8 bracing members in a heavy 30 m × 60 m industrial portal frame using ISA 125×75×10, each 1800 mm long. Total length = 8 × 1.8 = 14.4 m. Weight = 14.4 × 14.9 = 214.6 kg. At ₹63,000 per tonne (Hyderabad, May 2026), material cost is approximately ₹13,519 before cutting charges.
Related ISA Unequal Angle Sections
Compare with adjacent sizes: ISA 125×75×8 (12.1 kg/m) · ISA 150×100×10 (18.8 kg/m). For all ISA unequal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 125×75×10 per metre?
ISA 125×75×10 weighs 14.9 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 89.4 kg. For a 12-metre length, total weight is 178.8 kg.
ISA 125×75×10 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 125×75×10 ka weight 14.9 kg/m hota hai. 6 metre ki ek length ka total weight 89.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 125×75×10?
ISA 125×75×10 per IS 808:1989 has a long leg of 125 mm, short leg of 75 mm, thickness of 10 mm, and cross-sectional area of 18.98 cm².
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