CHS 168x18.26 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 168x18.26 steel profile weighs 67.4 kg/m (45.31 lb/ft). Cross-sectional area: 8,589.907 mm². Moment of inertia Ix = 2,443.345 cm⁴, Iy = 2,443.345 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	18.3 mm	0.72 in
Diameter (d)	168 mm	6.61 in
Weight	67.4 kg/m	45.31 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,589.91 mm²	13.314 in²
Moment of inertia (Ix)	2,443.34 cm⁴	58.70 in⁴
Moment of inertia (Iy)	2,443.34 cm⁴	58.70 in⁴
Elastic section modulus (Sx)	290.87 cm³	17.750 in³
Elastic section modulus (Sy)	290.87 cm³	17.750 in³
Plastic section modulus (Zx)	411.46 cm³	25.109 in³
Plastic section modulus (Zy)	411.46 cm³	25.109 in³
Radius of gyration (rx)	5.33 cm	2.100 in
Radius of gyration (ry)	5.33 cm	2.100 in