CHS 89x8 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 89x8 steel profile weighs 16.0 kg/m (10.74 lb/ft). Cross-sectional area: 2,035.752 mm². Moment of inertia Ix = 168.586 cm⁴, Iy = 168.586 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	89 mm	3.50 in
Weight	16.0 kg/m	10.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,035.75 mm²	3.155 in²
Moment of inertia (Ix)	168.59 cm⁴	4.05 in⁴
Moment of inertia (Iy)	168.59 cm⁴	4.05 in⁴
Elastic section modulus (Sx)	37.88 cm³	2.312 in³
Elastic section modulus (Sy)	37.88 cm³	2.312 in³
Plastic section modulus (Zx)	52.66 cm³	3.213 in³
Plastic section modulus (Zy)	52.66 cm³	3.213 in³
Radius of gyration (rx)	2.88 cm	1.133 in
Radius of gyration (ry)	2.88 cm	1.133 in