CHS 273x18.2 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 273x18.2 steel profile weighs 114.4 kg/m (76.85 lb/ft). Cross-sectional area: 14,568.696 mm². Moment of inertia Ix = 11,883.372 cm⁴, Iy = 11,883.372 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	18.2 mm	0.72 in
Diameter (d)	273 mm	10.75 in
Weight	114.4 kg/m	76.85 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	14,568.7 mm²	22.581 in²
Moment of inertia (Ix)	11,883.37 cm⁴	285.50 in⁴
Moment of inertia (Iy)	11,883.37 cm⁴	285.50 in⁴
Elastic section modulus (Sx)	870.58 cm³	53.126 in³
Elastic section modulus (Sy)	870.58 cm³	53.126 in³
Plastic section modulus (Zx)	1,183.61 cm³	72.229 in³
Plastic section modulus (Zy)	1,183.61 cm³	72.229 in³
Radius of gyration (rx)	9.03 cm	3.556 in
Radius of gyration (ry)	9.03 cm	3.556 in