CHS 42x8 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 42x8 steel profile weighs 6.7 kg/m (4.51 lb/ft). Cross-sectional area: 854.513 mm². Moment of inertia Ix = 13.031 cm⁴, Iy = 13.031 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	42 mm	1.65 in
Weight	6.7 kg/m	4.51 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	854.51 mm²	1.324 in²
Moment of inertia (Ix)	13.03 cm⁴	0.31 in⁴
Moment of inertia (Iy)	13.03 cm⁴	0.31 in⁴
Elastic section modulus (Sx)	6.21 cm³	0.379 in³
Elastic section modulus (Sy)	6.21 cm³	0.379 in³
Plastic section modulus (Zx)	9.42 cm³	0.575 in³
Plastic section modulus (Zy)	9.42 cm³	0.575 in³
Radius of gyration (rx)	1.23 cm	0.486 in
Radius of gyration (ry)	1.23 cm	0.486 in