CHS 323.9x12 SAISC · Weight & Dimensions

SAISC, 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 323.9x12 steel profile weighs 92.3 kg/m (62.03 lb/ft). Cross-sectional area: 11,758.353 mm². Moment of inertia Ix = 14,319.559 cm⁴, Iy = 14,319.559 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	12 mm	0.47 in
Diameter (d)	323.9 mm	12.75 in
Weight	92.3 kg/m	62.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	11,758.35 mm²	18.225 in²
Moment of inertia (Ix)	14,319.56 cm⁴	344.03 in⁴
Moment of inertia (Iy)	14,319.56 cm⁴	344.03 in⁴
Elastic section modulus (Sx)	884.2 cm³	53.957 in³
Elastic section modulus (Sy)	884.2 cm³	53.957 in³
Plastic section modulus (Zx)	1,167.96 cm³	71.273 in³
Plastic section modulus (Zy)	1,167.96 cm³	71.273 in³
Radius of gyration (rx)	11.04 cm	4.345 in
Radius of gyration (ry)	11.04 cm	4.345 in