CHS 406.4x12.5 · 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 406.4x12.5 steel profile weighs 121.0 kg/m (81.31 lb/ft). Cross-sectional area: 15,468.4 mm². Moment of inertia Ix = 30,030.67 cm⁴, Iy = 30,030.67 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	12.5 mm	0.49 in
Diameter (d)	406.4 mm	16.00 in
Weight	121.0 kg/m	81.31 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	15,468.4 mm²	23.976 in²
Moment of inertia (Ix)	30,030.67 cm⁴	721.49 in⁴
Moment of inertia (Iy)	30,030.67 cm⁴	721.49 in⁴
Elastic section modulus (Sx)	1,477.89 cm³	90.187 in³
Elastic section modulus (Sy)	1,477.89 cm³	90.187 in³
Plastic section modulus (Zx)	1,940.12 cm³	118.394 in³
Plastic section modulus (Zy)	1,940.12 cm³	118.394 in³
Radius of gyration (rx)	13.93 cm	5.484 in
Radius of gyration (ry)	13.93 cm	5.484 in