CHS 323.9x8 · 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 323.9x8 steel profile weighs 62.3 kg/m (41.87 lb/ft). Cross-sectional area: 7,939.4 mm². Moment of inertia Ix = 9,910.08 cm⁴, Iy = 9,910.08 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	323.9 mm	12.75 in
Weight	62.3 kg/m	41.87 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,939.4 mm²	12.306 in²
Moment of inertia (Ix)	9,910.08 cm⁴	238.09 in⁴
Moment of inertia (Iy)	9,910.08 cm⁴	238.09 in⁴
Elastic section modulus (Sx)	611.92 cm³	37.342 in³
Elastic section modulus (Sy)	611.92 cm³	37.342 in³
Plastic section modulus (Zx)	798.51 cm³	48.728 in³
Plastic section modulus (Zy)	798.51 cm³	48.728 in³
Radius of gyration (rx)	11.17 cm	4.398 in
Radius of gyration (ry)	11.17 cm	4.398 in