RHS 120x80x5.2 Açotubo · Weight & Dimensions

Açotubo, 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 120x80 (México) · Caño estructural 120x80 (Argentina)

The RHS 120x80x5.2 steel profile weighs 14.9 kg/m (10.03 lb/ft), has a depth of 120 mm (4.72 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,902.206 mm². Moment of inertia Ix = 364.17 cm⁴, Iy = 193.48 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5.2 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	80 mm	3.15 in
Thickness (t)	5.2 mm	0.20 in
Fillet radius (r)	10.4 mm	0.41 in
Weight	14.9 kg/m	10.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,902.21 mm²	2.948 in²
Moment of inertia (Ix)	364.17 cm⁴	8.75 in⁴
Moment of inertia (Iy)	193.48 cm⁴	4.65 in⁴
Elastic section modulus (Sx)	60.69 cm³	3.704 in³
Elastic section modulus (Sy)	48.37 cm³	2.952 in³
Plastic section modulus (Zx)	74.88 cm³	4.569 in³
Plastic section modulus (Zy)	56.55 cm³	3.451 in³
Radius of gyration (rx)	4.38 cm	1.723 in
Radius of gyration (ry)	3.19 cm	1.256 in