CHS 406x7.92 IMCA · Weight & Dimensions

IMCA, 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 406x7.92 steel profile weighs 77.8 kg/m (52.25 lb/ft). Cross-sectional area: 9,904.793 mm². Moment of inertia Ix = 19,627.637 cm⁴, Iy = 19,627.637 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7.9 mm	0.31 in
Diameter (d)	406 mm	15.98 in
Weight	77.8 kg/m	52.25 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,904.79 mm²	15.352 in²
Moment of inertia (Ix)	19,627.64 cm⁴	471.55 in⁴
Moment of inertia (Iy)	19,627.64 cm⁴	471.55 in⁴
Elastic section modulus (Sx)	966.88 cm³	59.003 in³
Elastic section modulus (Sy)	966.88 cm³	59.003 in³
Plastic section modulus (Zx)	1,255.23 cm³	76.599 in³
Plastic section modulus (Zy)	1,255.23 cm³	76.599 in³
Radius of gyration (rx)	14.08 cm	5.542 in
Radius of gyration (ry)	14.08 cm	5.542 in