RHS 120x80x4.4 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 120x80x4.4 steel profile weighs 12.8 kg/m (8.62 lb/ft), has a depth of 120 mm (4.72 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,632.704 mm². Moment of inertia Ix = 318.697 cm⁴, Iy = 169.883 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.4 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	80 mm	3.15 in
Thickness (t)	4.4 mm	0.17 in
Fillet radius (r)	8.8 mm	0.35 in
Weight	12.8 kg/m	8.62 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,632.7 mm²	2.531 in²
Moment of inertia (Ix)	318.7 cm⁴	7.66 in⁴
Moment of inertia (Iy)	169.88 cm⁴	4.08 in⁴
Elastic section modulus (Sx)	53.12 cm³	3.241 in³
Elastic section modulus (Sy)	42.47 cm³	2.592 in³
Plastic section modulus (Zx)	64.95 cm³	3.963 in³
Plastic section modulus (Zy)	49.12 cm³	2.997 in³
Radius of gyration (rx)	4.42 cm	1.739 in
Radius of gyration (ry)	3.23 cm	1.270 in