CHS 73x7 AHMSA · Weight & Dimensions

AHMSA, 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 73x7 steel profile weighs 11.4 kg/m (7.65 lb/ft). Cross-sectional area: 1,451.416 mm². Moment of inertia Ix = 79.919 cm⁴, Iy = 79.919 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7 mm	0.28 in
Diameter (d)	73 mm	2.87 in
Weight	11.4 kg/m	7.65 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,451.42 mm²	2.250 in²
Moment of inertia (Ix)	79.92 cm⁴	1.92 in⁴
Moment of inertia (Iy)	79.92 cm⁴	1.92 in⁴
Elastic section modulus (Sx)	21.9 cm³	1.336 in³
Elastic section modulus (Sy)	21.9 cm³	1.336 in³
Plastic section modulus (Zx)	30.61 cm³	1.868 in³
Plastic section modulus (Zy)	30.61 cm³	1.868 in³
Radius of gyration (rx)	2.35 cm	0.924 in
Radius of gyration (ry)	2.35 cm	0.924 in