CHS 45x2 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 45x2 steel profile weighs 2.1 kg/m (1.42 lb/ft). Cross-sectional area: 270.177 mm². Moment of inertia Ix = 6.258 cm⁴, Iy = 6.258 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2 mm	0.08 in
Diameter (d)	45 mm	1.77 in
Weight	2.1 kg/m	1.42 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	270.18 mm²	0.419 in²
Moment of inertia (Ix)	6.26 cm⁴	0.15 in⁴
Moment of inertia (Iy)	6.26 cm⁴	0.15 in⁴
Elastic section modulus (Sx)	2.78 cm³	0.170 in³
Elastic section modulus (Sy)	2.78 cm³	0.170 in³
Plastic section modulus (Zx)	3.7 cm³	0.226 in³
Plastic section modulus (Zy)	3.7 cm³	0.226 in³
Radius of gyration (rx)	1.52 cm	0.599 in
Radius of gyration (ry)	1.52 cm	0.599 in