CHS 73x4.4 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 73x4.4 steel profile weighs 7.4 kg/m (5.00 lb/ft). Cross-sectional area: 948.258 mm². Moment of inertia Ix = 56.01 cm⁴, Iy = 56.01 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Thickness (t)	4.4 mm	0.17 in
Diameter (d)	73 mm	2.87 in
Weight	7.4 kg/m	5.00 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	948.26 mm²	1.470 in²
Moment of inertia (Ix)	56.01 cm⁴	1.35 in⁴
Moment of inertia (Iy)	56.01 cm⁴	1.35 in⁴
Elastic section modulus (Sx)	15.35 cm³	0.936 in³
Elastic section modulus (Sy)	15.35 cm³	0.936 in³
Plastic section modulus (Zx)	20.73 cm³	1.265 in³
Plastic section modulus (Zy)	20.73 cm³	1.265 in³
Radius of gyration (rx)	2.43 cm	0.957 in
Radius of gyration (ry)	2.43 cm	0.957 in