CHS 406x16.7 AHMSA · Weight & Dimensions

AHMSA, 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 406x16.7 steel profile weighs 160.3 kg/m (107.74 lb/ft). Cross-sectional area: 20,424.468 mm². Moment of inertia Ix = 38,763.95 cm⁴, Iy = 38,763.95 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	16.7 mm	0.66 in
Diameter (d)	406 mm	15.98 in
Weight	160.3 kg/m	107.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	20,424.47 mm²	31.658 in²
Moment of inertia (Ix)	38,763.95 cm⁴	931.30 in⁴
Moment of inertia (Iy)	38,763.95 cm⁴	931.30 in⁴
Elastic section modulus (Sx)	1,909.55 cm³	116.529 in³
Elastic section modulus (Sy)	1,909.55 cm³	116.529 in³
Plastic section modulus (Zx)	2,532.51 cm³	154.544 in³
Plastic section modulus (Zy)	2,532.51 cm³	154.544 in³
Radius of gyration (rx)	13.78 cm	5.424 in
Radius of gyration (ry)	13.78 cm	5.424 in