CHS 42x4 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 42x4 steel profile weighs 3.8 kg/m (2.52 lb/ft). Cross-sectional area: 477.522 mm². Moment of inertia Ix = 8.715 cm⁴, Iy = 8.715 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4 mm	0.16 in
Diameter (d)	42 mm	1.65 in
Weight	3.8 kg/m	2.52 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	477.52 mm²	0.740 in²
Moment of inertia (Ix)	8.71 cm⁴	0.21 in⁴
Moment of inertia (Iy)	8.71 cm⁴	0.21 in⁴
Elastic section modulus (Sx)	4.15 cm³	0.253 in³
Elastic section modulus (Sy)	4.15 cm³	0.253 in³
Plastic section modulus (Zx)	5.8 cm³	0.354 in³
Plastic section modulus (Zy)	5.8 cm³	0.354 in³
Radius of gyration (rx)	1.35 cm	0.532 in
Radius of gyration (ry)	1.35 cm	0.532 in