CHS 168x21.95 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 168x21.95 steel profile weighs 79.1 kg/m (53.13 lb/ft). Cross-sectional area: 10,071.31 mm². Moment of inertia Ix = 2,745.994 cm⁴, Iy = 2,745.994 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	21.9 mm	0.86 in
Diameter (d)	168 mm	6.61 in
Weight	79.1 kg/m	53.13 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,071.31 mm²	15.611 in²
Moment of inertia (Ix)	2,745.99 cm⁴	65.97 in⁴
Moment of inertia (Iy)	2,745.99 cm⁴	65.97 in⁴
Elastic section modulus (Sx)	326.9 cm³	19.949 in³
Elastic section modulus (Sy)	326.9 cm³	19.949 in³
Plastic section modulus (Zx)	471.73 cm³	28.787 in³
Plastic section modulus (Zy)	471.73 cm³	28.787 in³
Radius of gyration (rx)	5.22 cm	2.056 in
Radius of gyration (ry)	5.22 cm	2.056 in