CHS 45x3.5 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 45x3.5 steel profile weighs 3.6 kg/m (2.41 lb/ft). Cross-sectional area: 456.316 mm². Moment of inertia Ix = 9.894 cm⁴, Iy = 9.894 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.5 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.5 mm	0.14 in
Diameter (d)	45 mm	1.77 in
Weight	3.6 kg/m	2.41 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	456.32 mm²	0.707 in²
Moment of inertia (Ix)	9.89 cm⁴	0.24 in⁴
Moment of inertia (Iy)	9.89 cm⁴	0.24 in⁴
Elastic section modulus (Sx)	4.4 cm³	0.268 in³
Elastic section modulus (Sy)	4.4 cm³	0.268 in³
Plastic section modulus (Zx)	6.04 cm³	0.369 in³
Plastic section modulus (Zy)	6.04 cm³	0.369 in³
Radius of gyration (rx)	1.47 cm	0.580 in
Radius of gyration (ry)	1.47 cm	0.580 in