ISA 200×150×18 Weight, Dimensions and IS 808 Properties
ISA 200×150×18 weighs 47.1 kg per metre as per IS 808:1989.
- One 6-metre length weighs 282.6 kg · one 12-metre length weighs 565.2 kg
- Long leg 200 mm · short leg 150 mm · thickness 18 mm · area 59.8 cm²
- Maximum principal moment of inertia Iuu = 2735.0 cm⁴
ISA 200×150×18 is a standard unequal-leg angle in IS 808:1989. At 47.1 kg/m with a 200 mm long leg and 150 mm short leg, it is used for the maximum standard wall thickness in IS 808:1989 for this leg size — used in primary structural chord members of very long-span heavy trusses, heavily loaded column bracket angles for multi-hook overhead cranes, and critical connection details in heavy industrial structures.
ISA 200×150×18 Weight Calculator
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ISA 200×150×18 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Long leg | A | mm | 200 |
| Short leg | B | mm | 150 |
| Thickness | t | mm | 18 |
| Cross-sectional area | A | cm² | 59.8 |
| Mass per metre | — | kg/m | 47.1 |
| Centroid from back of long leg | Cxx | cm | 4.37 |
| Centroid from back of short leg | Cyy | cm | 3.27 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 2303.0 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 805.0 |
| Moment of inertia (u–u, max principal) | Iuu | cm⁴ | 2735.0 |
| Moment of inertia (v–v, min principal) | Ivv | cm⁴ | 373.0 |
| Elastic section modulus (x–x) | Zxx | cm³ | 170.9 |
| Elastic section modulus (y–y) | Zyy | cm³ | 77.1 |
| Radius of gyration (u–u) | ruu | cm | 6.76 |
| Radius of gyration (v–v) | rvv | cm | 2.5 |
| Tangent of principal axis angle | tan α | — | 0.451 |
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 200×150×18
ISA 200×150×18 is used for the maximum standard wall thickness in IS 808:1989 for this leg size — used in primary structural chord members of very long-span heavy trusses, heavily loaded column bracket angles for multi-hook overhead cranes, and critical connection details in heavy industrial structures. 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 Mumbai needs 2 primary truss chord members on a 100 m span heavy industrial structure using ISA 200×150×18, each 6000 mm long. Total length = 2 × 6.0 = 12.0 m. Weight = 12.0 × 47.1 = 565.2 kg. At ₹63,000 per tonne (Mumbai, May 2026), material cost is approximately ₹35,607 before cutting charges.
Related ISA Unequal Angle Sections
Compare with adjacent sizes: ISA 200×150×15 (39.4 kg/m) · no larger standard unequal ISA in IS 808:1989. For all ISA unequal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 200×150×18 per metre?
ISA 200×150×18 weighs 47.1 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 282.6 kg. For a 12-metre length, total weight is 565.2 kg.
ISA 200×150×18 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 200×150×18 ka weight 47.1 kg/m hota hai. 6 metre ki ek length ka total weight 282.6 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 200×150×18?
ISA 200×150×18 per IS 808:1989 has a long leg of 200 mm, short leg of 150 mm, thickness of 18 mm, and cross-sectional area of 59.8 cm².
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