CHS 406x9.5 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 406x9.5 steel profile weighs 92.9 kg/m (62.42 lb/ft). Cross-sectional area: 11,833.594 mm². Moment of inertia Ix = 23,268.174 cm⁴, Iy = 23,268.174 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	9.5 mm	0.37 in
Diameter (d)	406 mm	15.98 in
Weight	92.9 kg/m	62.42 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	11,833.59 mm²	18.342 in²
Moment of inertia (Ix)	23,268.17 cm⁴	559.02 in⁴
Moment of inertia (Iy)	23,268.17 cm⁴	559.02 in⁴
Elastic section modulus (Sx)	1,146.22 cm³	69.947 in³
Elastic section modulus (Sy)	1,146.22 cm³	69.947 in³
Plastic section modulus (Zx)	1,493.8 cm³	91.158 in³
Plastic section modulus (Zy)	1,493.8 cm³	91.158 in³
Radius of gyration (rx)	14.02 cm	5.521 in
Radius of gyration (ry)	14.02 cm	5.521 in