CHS 273x21.4 AHMSA · Weight & Dimensions

AHMSA, 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 273x21.4 steel profile weighs 132.8 kg/m (89.23 lb/ft). Cross-sectional area: 16,915.089 mm². Moment of inertia Ix = 13,481.436 cm⁴, Iy = 13,481.436 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	21.4 mm	0.84 in
Diameter (d)	273 mm	10.75 in
Weight	132.8 kg/m	89.23 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,915.09 mm²	26.218 in²
Moment of inertia (Ix)	13,481.44 cm⁴	323.89 in⁴
Moment of inertia (Iy)	13,481.44 cm⁴	323.89 in⁴
Elastic section modulus (Sx)	987.65 cm³	60.270 in³
Elastic section modulus (Sy)	987.65 cm³	60.270 in³
Plastic section modulus (Zx)	1,357.94 cm³	82.867 in³
Plastic section modulus (Zy)	1,357.94 cm³	82.867 in³
Radius of gyration (rx)	8.93 cm	3.515 in
Radius of gyration (ry)	8.93 cm	3.515 in