CHS 73x5.2 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 73x5.2 steel profile weighs 8.7 kg/m (5.84 lb/ft). Cross-sectional area: 1,107.6 mm². Moment of inertia Ix = 64.018 cm⁴, Iy = 64.018 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Thickness (t)	5.2 mm	0.20 in
Diameter (d)	73 mm	2.87 in
Weight	8.7 kg/m	5.84 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,107.6 mm²	1.717 in²
Moment of inertia (Ix)	64.02 cm⁴	1.54 in⁴
Moment of inertia (Iy)	64.02 cm⁴	1.54 in⁴
Elastic section modulus (Sx)	17.54 cm³	1.070 in³
Elastic section modulus (Sy)	17.54 cm³	1.070 in³
Plastic section modulus (Zx)	23.95 cm³	1.462 in³
Plastic section modulus (Zy)	23.95 cm³	1.462 in³
Radius of gyration (rx)	2.4 cm	0.947 in
Radius of gyration (ry)	2.4 cm	0.947 in