RHS 80x40x5 Tata Steel Hybox · Weight & Dimensions

Tata Steel Hybox · Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 80x40 cal 6 (México) · Caño estructural 80x40 (Argentina)

The RHS 80x40x5 steel profile weighs 8.1 kg/m (5.46 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 1,035.619 mm². Moment of inertia Ix = 75.109 cm⁴, Iy = 24.593 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	5 mm	0.20 in
Fillet radius (r)	10 mm	0.39 in
Weight	8.1 kg/m	5.46 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,035.62 mm²	1.605 in²
Moment of inertia (Ix)	75.11 cm⁴	1.80 in⁴
Moment of inertia (Iy)	24.59 cm⁴	0.59 in⁴
Elastic section modulus (Sx)	18.78 cm³	1.146 in³
Elastic section modulus (Sy)	12.3 cm³	0.750 in³
Plastic section modulus (Zx)	24.74 cm³	1.509 in³
Plastic section modulus (Zy)	15.02 cm³	0.917 in³
Radius of gyration (rx)	2.69 cm	1.060 in
Radius of gyration (ry)	1.54 cm	0.607 in