CHS 168x7.1 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 168x7.1 steel profile weighs 28.2 kg/m (18.93 lb/ft). Cross-sectional area: 3,588.924 mm². Moment of inertia Ix = 1,163.674 cm⁴, Iy = 1,163.674 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7.1 mm	0.28 in
Diameter (d)	168 mm	6.61 in
Weight	28.2 kg/m	18.93 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,588.92 mm²	5.563 in²
Moment of inertia (Ix)	1,163.67 cm⁴	27.96 in⁴
Moment of inertia (Iy)	1,163.67 cm⁴	27.96 in⁴
Elastic section modulus (Sx)	138.53 cm³	8.454 in³
Elastic section modulus (Sy)	138.53 cm³	8.454 in³
Plastic section modulus (Zx)	183.93 cm³	11.224 in³
Plastic section modulus (Zy)	183.93 cm³	11.224 in³
Radius of gyration (rx)	5.69 cm	2.242 in
Radius of gyration (ry)	5.69 cm	2.242 in