StructureCalcsISA 40x40x6
Angle (ISA) · IS 808 · India
ISA 40x40x6 is an Indian standard angle with 40 × 40 mm legs, 6.0 mm thick, weighing 3.4 kg/m. The dimensions below are the published IS 808 values; the drawing is generated from them.
ISA angles brace and connect Indian steelwork; an angle bends about tilted principal axes, and the derived principal values below carry their angle.
Analyse this section, or combine it with plates and other shapes.
Open ISA 40x40x6 in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Leg length, d | 40 mm | 1.57 in |
| Thickness, t | 6.0 mm | 0.236 in |
| Mass per metre | 3.4 kg/m | 2.3 lb/ft |
| Area, A | 434 mm² | 0.67 in² |
| Second moment, Ix | 64,200 mm⁴ | 0.2 in⁴ |
| Second moment, Iy | 64,200 mm⁴ | 0.2 in⁴ |
Derived section properties
Integrated from a square-cornered outline — the fillet radii this family really has are not drawn, so the computed values differ slightly from published. For ISA 40x40x6 the computed area is 2.30% from published and Ix 0.44%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zex | 2,319 mm³ |
| Elastic modulus, Zey | 2,319 mm³ |
| Plastic modulus, Zpx | 4,180 mm³ |
| Plastic modulus, Zpy | 4,180 mm³ |
| Radius of gyration, rx | 12.1 mm |
| Radius of gyration, ry | 12.1 mm |
| Principal maximum, Imax (derived) | 101,972 mm⁴ |
| Principal minimum, Imin (derived) | 26,988 mm⁴ |
| Principal axis angle, θp | 45.0° |
Ze is the elastic modulus and Zp the plastic modulus, following IS 800 notation.
Neighbouring sizes
Where these numbers come from
Published IS 808 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API