CHS 45x8 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 45x8 steel profile weighs 7.3 kg/m (4.91 lb/ft). Cross-sectional area: 929.911 mm². Moment of inertia Ix = 16.657 cm⁴, Iy = 16.657 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	45 mm	1.77 in
Weight	7.3 kg/m	4.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	929.91 mm²	1.441 in²
Moment of inertia (Ix)	16.66 cm⁴	0.40 in⁴
Moment of inertia (Iy)	16.66 cm⁴	0.40 in⁴
Elastic section modulus (Sx)	7.4 cm³	0.452 in³
Elastic section modulus (Sy)	7.4 cm³	0.452 in³
Plastic section modulus (Zx)	11.12 cm³	0.679 in³
Plastic section modulus (Zy)	11.12 cm³	0.679 in³
Radius of gyration (rx)	1.34 cm	0.527 in
Radius of gyration (ry)	1.34 cm	0.527 in