CHS 323.8x8.4 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 323.8x8.4 steel profile weighs 65.3 kg/m (43.91 lb/ft). Cross-sectional area: 8,323.21 mm². Moment of inertia Ix = 10,356.957 cm⁴, Iy = 10,356.957 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8.4 mm	0.33 in
Diameter (d)	323.8 mm	12.75 in
Weight	65.3 kg/m	43.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,323.21 mm²	12.901 in²
Moment of inertia (Ix)	10,356.96 cm⁴	248.83 in⁴
Moment of inertia (Iy)	10,356.96 cm⁴	248.83 in⁴
Elastic section modulus (Sx)	639.71 cm³	39.038 in³
Elastic section modulus (Sy)	639.71 cm³	39.038 in³
Plastic section modulus (Zx)	835.81 cm³	51.004 in³
Plastic section modulus (Zy)	835.81 cm³	51.004 in³
Radius of gyration (rx)	11.16 cm	4.392 in
Radius of gyration (ry)	11.16 cm	4.392 in