CHS 45x1 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 45x1 steel profile weighs 1.1 kg/m (0.73 lb/ft). Cross-sectional area: 138.23 mm². Moment of inertia Ix = 3.347 cm⁴, Iy = 3.347 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1 mm	0.04 in
Diameter (d)	45 mm	1.77 in
Weight	1.1 kg/m	0.73 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	138.23 mm²	0.214 in²
Moment of inertia (Ix)	3.35 cm⁴	0.08 in⁴
Moment of inertia (Iy)	3.35 cm⁴	0.08 in⁴
Elastic section modulus (Sx)	1.49 cm³	0.091 in³
Elastic section modulus (Sy)	1.49 cm³	0.091 in³
Plastic section modulus (Zx)	1.94 cm³	0.118 in³
Plastic section modulus (Zy)	1.94 cm³	0.118 in³
Radius of gyration (rx)	1.56 cm	0.613 in
Radius of gyration (ry)	1.56 cm	0.613 in