CHS 406.4x7.95 CISC · Weight & Dimensions

CISC, 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 406.4x7.95 steel profile weighs 78.1 kg/m (52.50 lb/ft). Cross-sectional area: 9,951.552 mm². Moment of inertia Ix = 19,757.017 cm⁴, Iy = 19,757.017 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8.0 mm	0.31 in
Diameter (d)	406.4 mm	16.00 in
Weight	78.1 kg/m	52.50 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,951.55 mm²	15.425 in²
Moment of inertia (Ix)	19,757.02 cm⁴	474.66 in⁴
Moment of inertia (Iy)	19,757.02 cm⁴	474.66 in⁴
Elastic section modulus (Sx)	972.29 cm³	59.333 in³
Elastic section modulus (Sy)	972.29 cm³	59.333 in³
Plastic section modulus (Zx)	1,262.33 cm³	77.032 in³
Plastic section modulus (Zy)	1,262.33 cm³	77.032 in³
Radius of gyration (rx)	14.09 cm	5.547 in
Radius of gyration (ry)	14.09 cm	5.547 in