CHS 273x12.7 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 273x12.7 steel profile weighs 81.5 kg/m (54.79 lb/ft). Cross-sectional area: 10,385.508 mm². Moment of inertia Ix = 8,816.957 cm⁴, Iy = 8,816.957 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	12.7 mm	0.50 in
Diameter (d)	273 mm	10.75 in
Weight	81.5 kg/m	54.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,385.51 mm²	16.098 in²
Moment of inertia (Ix)	8,816.96 cm⁴	211.83 in⁴
Moment of inertia (Iy)	8,816.96 cm⁴	211.83 in⁴
Elastic section modulus (Sx)	645.93 cm³	39.417 in³
Elastic section modulus (Sy)	645.93 cm³	39.417 in³
Plastic section modulus (Zx)	861.19 cm³	52.553 in³
Plastic section modulus (Zy)	861.19 cm³	52.553 in³
Radius of gyration (rx)	9.21 cm	3.628 in
Radius of gyration (ry)	9.21 cm	3.628 in