CHS 45x2.5 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 45x2.5 steel profile weighs 2.6 kg/m (1.76 lb/ft). Cross-sectional area: 333.794 mm². Moment of inertia Ix = 7.563 cm⁴, Iy = 7.563 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)	45 mm	1.77 in
Weight	2.6 kg/m	1.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	333.79 mm²	0.517 in²
Moment of inertia (Ix)	7.56 cm⁴	0.18 in⁴
Moment of inertia (Iy)	7.56 cm⁴	0.18 in⁴
Elastic section modulus (Sx)	3.36 cm³	0.205 in³
Elastic section modulus (Sy)	3.36 cm³	0.205 in³
Plastic section modulus (Zx)	4.52 cm³	0.276 in³
Plastic section modulus (Zy)	4.52 cm³	0.276 in³
Radius of gyration (rx)	1.51 cm	0.593 in
Radius of gyration (ry)	1.51 cm	0.593 in