CHS 180x40 GOST · Weight & Dimensions

GOST, 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 180x40 steel profile weighs 138.1 kg/m (92.80 lb/ft). Cross-sectional area: 17,592.919 mm². Moment of inertia Ix = 4,662.123 cm⁴, Iy = 4,662.123 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	40 mm	1.57 in
Diameter (d)	180 mm	7.09 in
Weight	138.1 kg/m	92.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	17,592.92 mm²	27.269 in²
Moment of inertia (Ix)	4,662.12 cm⁴	112.01 in⁴
Moment of inertia (Iy)	4,662.12 cm⁴	112.01 in⁴
Elastic section modulus (Sx)	518.01 cm³	31.611 in³
Elastic section modulus (Sy)	518.01 cm³	31.611 in³
Plastic section modulus (Zx)	805.33 cm³	49.145 in³
Plastic section modulus (Zy)	805.33 cm³	49.145 in³
Radius of gyration (rx)	5.15 cm	2.027 in
Radius of gyration (ry)	5.15 cm	2.027 in