CHS 57x5 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 57x5 steel profile weighs 6.4 kg/m (4.31 lb/ft). Cross-sectional area: 816.814 mm². Moment of inertia Ix = 27.864 cm⁴, Iy = 27.864 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)	57 mm	2.24 in
Weight	6.4 kg/m	4.31 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	816.81 mm²	1.266 in²
Moment of inertia (Ix)	27.86 cm⁴	0.67 in⁴
Moment of inertia (Iy)	27.86 cm⁴	0.67 in⁴
Elastic section modulus (Sx)	9.78 cm³	0.597 in³
Elastic section modulus (Sy)	9.78 cm³	0.597 in³
Plastic section modulus (Zx)	13.56 cm³	0.828 in³
Plastic section modulus (Zy)	13.56 cm³	0.828 in³
Radius of gyration (rx)	1.85 cm	0.727 in
Radius of gyration (ry)	1.85 cm	0.727 in