CHS 73x4.8 Açotubo · Weight & Dimensions

Açotubo, cold-formed sections · Circular Hollow Section

Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.

Also known as: Caño estructural redondo (Argentina)

The CHS 73x4.8 steel profile weighs 8.1 kg/m (5.42 lb/ft). Cross-sectional area: 1,028.432 mm². Moment of inertia Ix = 60.09 cm⁴, Iy = 60.09 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Thickness (t)	4.8 mm	0.19 in
Diameter (d)	73 mm	2.87 in
Weight	8.1 kg/m	5.42 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,028.43 mm²	1.594 in²
Moment of inertia (Ix)	60.09 cm⁴	1.44 in⁴
Moment of inertia (Iy)	60.09 cm⁴	1.44 in⁴
Elastic section modulus (Sx)	16.46 cm³	1.005 in³
Elastic section modulus (Sy)	16.46 cm³	1.005 in³
Plastic section modulus (Zx)	22.36 cm³	1.365 in³
Plastic section modulus (Zy)	22.36 cm³	1.365 in³
Radius of gyration (rx)	2.42 cm	0.952 in
Radius of gyration (ry)	2.42 cm	0.952 in