CHS 73x6 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 73x6 steel profile weighs 9.9 kg/m (6.66 lb/ft). Cross-sectional area: 1,262.92 mm². Moment of inertia Ix = 71.434 cm⁴, Iy = 71.434 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6 mm	0.24 in
Diameter (d)	73 mm	2.87 in
Weight	9.9 kg/m	6.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,262.92 mm²	1.958 in²
Moment of inertia (Ix)	71.43 cm⁴	1.72 in⁴
Moment of inertia (Iy)	71.43 cm⁴	1.72 in⁴
Elastic section modulus (Sx)	19.57 cm³	1.194 in³
Elastic section modulus (Sy)	19.57 cm³	1.194 in³
Plastic section modulus (Zx)	27.01 cm³	1.648 in³
Plastic section modulus (Zy)	27.01 cm³	1.648 in³
Radius of gyration (rx)	2.38 cm	0.936 in
Radius of gyration (ry)	2.38 cm	0.936 in