CHS 273x9 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 273x9 steel profile weighs 58.6 kg/m (39.38 lb/ft). Cross-sectional area: 7,464.424 mm². Moment of inertia Ix = 6,510.564 cm⁴, Iy = 6,510.564 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	9 mm	0.35 in
Diameter (d)	273 mm	10.75 in
Weight	58.6 kg/m	39.38 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,464.42 mm²	11.570 in²
Moment of inertia (Ix)	6,510.56 cm⁴	156.42 in⁴
Moment of inertia (Iy)	6,510.56 cm⁴	156.42 in⁴
Elastic section modulus (Sx)	476.96 cm³	29.106 in³
Elastic section modulus (Sy)	476.96 cm³	29.106 in³
Plastic section modulus (Zx)	627.51 cm³	38.293 in³
Plastic section modulus (Zy)	627.51 cm³	38.293 in³
Radius of gyration (rx)	9.34 cm	3.677 in
Radius of gyration (ry)	9.34 cm	3.677 in