RHS 80x40x1.5 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Brazil) · 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 16 (México) · Caño estructural 80x40 (Argentina)

The RHS 80x40x1.5 steel profile weighs 2.7 kg/m (1.82 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 345.206 mm². Moment of inertia Ix = 28.988 cm⁴, Iy = 9.939 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.5 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	1.5 mm	0.06 in
Fillet radius (r)	3 mm	0.12 in
Weight	2.7 kg/m	1.82 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	345.21 mm²	0.535 in²
Moment of inertia (Ix)	28.99 cm⁴	0.70 in⁴
Moment of inertia (Iy)	9.94 cm⁴	0.24 in⁴
Elastic section modulus (Sx)	7.25 cm³	0.442 in³
Elastic section modulus (Sy)	4.97 cm³	0.303 in³
Plastic section modulus (Zx)	8.93 cm³	0.545 in³
Plastic section modulus (Zy)	5.53 cm³	0.338 in³
Radius of gyration (rx)	2.9 cm	1.141 in
Radius of gyration (ry)	1.7 cm	0.668 in