RHS 80x40x4.8 Tata Steel · Weight & Dimensions

Tata Steel, cold-formed sections · 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 80x40x4.8 steel profile weighs 7.9 kg/m (5.28 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 1,000.507 mm². Moment of inertia Ix = 73.218 cm⁴, Iy = 24.033 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.8 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	7.9 kg/m	5.28 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,000.51 mm²	1.551 in²
Moment of inertia (Ix)	73.22 cm⁴	1.76 in⁴
Moment of inertia (Iy)	24.03 cm⁴	0.58 in⁴
Elastic section modulus (Sx)	18.3 cm³	1.117 in³
Elastic section modulus (Sy)	12.02 cm³	0.733 in³
Plastic section modulus (Zx)	24.01 cm³	1.465 in³
Plastic section modulus (Zy)	14.6 cm³	0.891 in³
Radius of gyration (rx)	2.71 cm	1.065 in
Radius of gyration (ry)	1.55 cm	0.610 in