CHS 273.1x12.7 CISC · Weight & Dimensions

CISC, 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 273.1x12.7 steel profile weighs 81.6 kg/m (54.81 lb/ft). Cross-sectional area: 10,389.498 mm². Moment of inertia Ix = 8,827.106 cm⁴, Iy = 8,827.106 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	12.7 mm	0.50 in
Diameter (d)	273.1 mm	10.75 in
Weight	81.6 kg/m	54.81 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,389.5 mm²	16.104 in²
Moment of inertia (Ix)	8,827.11 cm⁴	212.07 in⁴
Moment of inertia (Iy)	8,827.11 cm⁴	212.07 in⁴
Elastic section modulus (Sx)	646.44 cm³	39.448 in³
Elastic section modulus (Sy)	646.44 cm³	39.448 in³
Plastic section modulus (Zx)	861.85 cm³	52.593 in³
Plastic section modulus (Zy)	861.85 cm³	52.593 in³
Radius of gyration (rx)	9.22 cm	3.629 in
Radius of gyration (ry)	9.22 cm	3.629 in