CHS 50x9 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 50x9 steel profile weighs 9.1 kg/m (6.12 lb/ft). Cross-sectional area: 1,159.248 mm². Moment of inertia Ix = 25.532 cm⁴, Iy = 25.532 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	9 mm	0.35 in
Diameter (d)	50 mm	1.97 in
Weight	9.1 kg/m	6.12 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,159.25 mm²	1.797 in²
Moment of inertia (Ix)	25.53 cm⁴	0.61 in⁴
Moment of inertia (Iy)	25.53 cm⁴	0.61 in⁴
Elastic section modulus (Sx)	10.21 cm³	0.623 in³
Elastic section modulus (Sy)	10.21 cm³	0.623 in³
Plastic section modulus (Zx)	15.37 cm³	0.938 in³
Plastic section modulus (Zy)	15.37 cm³	0.938 in³
Radius of gyration (rx)	1.48 cm	0.584 in
Radius of gyration (ry)	1.48 cm	0.584 in