CHS 89x5 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 89x5 steel profile weighs 10.4 kg/m (6.96 lb/ft). Cross-sectional area: 1,319.469 mm². Moment of inertia Ix = 116.789 cm⁴, Iy = 116.789 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	5 mm	0.20 in
Diameter (d)	89 mm	3.50 in
Weight	10.4 kg/m	6.96 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,319.47 mm²	2.045 in²
Moment of inertia (Ix)	116.79 cm⁴	2.81 in⁴
Moment of inertia (Iy)	116.79 cm⁴	2.81 in⁴
Elastic section modulus (Sx)	26.24 cm³	1.602 in³
Elastic section modulus (Sy)	26.24 cm³	1.602 in³
Plastic section modulus (Zx)	35.32 cm³	2.155 in³
Plastic section modulus (Zy)	35.32 cm³	2.155 in³
Radius of gyration (rx)	2.98 cm	1.171 in
Radius of gyration (ry)	2.98 cm	1.171 in