RHS 80x40x4 Tata Steel Celsius · Weight & Dimensions

Tata Steel Celsius · 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 8 (México) · Caño estructural 80x40 (Argentina)

The RHS 80x40x4 steel profile weighs 6.9 kg/m (4.64 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 868.531 mm². Moment of inertia Ix = 66.945 cm⁴, Iy = 22.009 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	6 mm	0.24 in
Weight	6.9 kg/m	4.64 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	868.53 mm²	1.346 in²
Moment of inertia (Ix)	66.95 cm⁴	1.61 in⁴
Moment of inertia (Iy)	22.01 cm⁴	0.53 in⁴
Elastic section modulus (Sx)	16.74 cm³	1.021 in³
Elastic section modulus (Sy)	11 cm³	0.672 in³
Plastic section modulus (Zx)	21.46 cm³	1.309 in³
Plastic section modulus (Zy)	13.04 cm³	0.796 in³
Radius of gyration (rx)	2.78 cm	1.093 in
Radius of gyration (ry)	1.59 cm	0.627 in