CHS 323.9x10 · Weight & Dimensions

EN — 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 323.9x10 steel profile weighs 77.4 kg/m (52.01 lb/ft). Cross-sectional area: 9,861.5 mm². Moment of inertia Ix = 12,158.34 cm⁴, Iy = 12,158.34 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	10 mm	0.39 in
Diameter (d)	323.9 mm	12.75 in
Weight	77.4 kg/m	52.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,861.5 mm²	15.285 in²
Moment of inertia (Ix)	12,158.34 cm⁴	292.10 in⁴
Moment of inertia (Iy)	12,158.34 cm⁴	292.10 in⁴
Elastic section modulus (Sx)	750.75 cm³	45.814 in³
Elastic section modulus (Sy)	750.75 cm³	45.814 in³
Plastic section modulus (Zx)	985.67 cm³	60.150 in³
Plastic section modulus (Zy)	985.67 cm³	60.150 in³
Radius of gyration (rx)	11.1 cm	4.370 in
Radius of gyration (ry)	11.1 cm	4.370 in