CHS 45x5 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 45x5 steel profile weighs 4.9 kg/m (3.31 lb/ft). Cross-sectional area: 628.319 mm². Moment of inertia Ix = 12.763 cm⁴, Iy = 12.763 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)	45 mm	1.77 in
Weight	4.9 kg/m	3.31 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	628.32 mm²	0.974 in²
Moment of inertia (Ix)	12.76 cm⁴	0.31 in⁴
Moment of inertia (Iy)	12.76 cm⁴	0.31 in⁴
Elastic section modulus (Sx)	5.67 cm³	0.346 in³
Elastic section modulus (Sy)	5.67 cm³	0.346 in³
Plastic section modulus (Zx)	8.04 cm³	0.491 in³
Plastic section modulus (Zy)	8.04 cm³	0.491 in³
Radius of gyration (rx)	1.43 cm	0.561 in
Radius of gyration (ry)	1.43 cm	0.561 in