CHS 42x5 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 42x5 steel profile weighs 4.6 kg/m (3.06 lb/ft). Cross-sectional area: 581.195 mm². Moment of inertia Ix = 10.127 cm⁴, Iy = 10.127 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)	42 mm	1.65 in
Weight	4.6 kg/m	3.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	581.19 mm²	0.901 in²
Moment of inertia (Ix)	10.13 cm⁴	0.24 in⁴
Moment of inertia (Iy)	10.13 cm⁴	0.24 in⁴
Elastic section modulus (Sx)	4.82 cm³	0.294 in³
Elastic section modulus (Sy)	4.82 cm³	0.294 in³
Plastic section modulus (Zx)	6.89 cm³	0.420 in³
Plastic section modulus (Zy)	6.89 cm³	0.420 in³
Radius of gyration (rx)	1.32 cm	0.520 in
Radius of gyration (ry)	1.32 cm	0.520 in