CHS 28x2.5 Hiasa · Weight & Dimensions

Hiasa, 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 28x2.5 steel profile weighs 1.6 kg/m (1.06 lb/ft). Cross-sectional area: 200.277 mm². Moment of inertia Ix = 1.644 cm⁴, Iy = 1.644 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2.5 mm	0.10 in
Diameter (d)	28 mm	1.10 in
Weight	1.6 kg/m	1.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	200.28 mm²	0.310 in²
Moment of inertia (Ix)	1.64 cm⁴	0.04 in⁴
Moment of inertia (Iy)	1.64 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.17 cm³	0.072 in³
Elastic section modulus (Sy)	1.17 cm³	0.072 in³
Plastic section modulus (Zx)	1.63 cm³	0.100 in³
Plastic section modulus (Zy)	1.63 cm³	0.100 in³
Radius of gyration (rx)	0.91 cm	0.357 in
Radius of gyration (ry)	0.91 cm	0.357 in