CHS 45x1.2 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 45x1.2 steel profile weighs 1.3 kg/m (0.87 lb/ft). Cross-sectional area: 165.122 mm². Moment of inertia Ix = 3.963 cm⁴, Iy = 3.963 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.2 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.2 mm	0.05 in
Diameter (d)	45 mm	1.77 in
Weight	1.3 kg/m	0.87 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	165.12 mm²	0.256 in²
Moment of inertia (Ix)	3.96 cm⁴	0.10 in⁴
Moment of inertia (Iy)	3.96 cm⁴	0.10 in⁴
Elastic section modulus (Sx)	1.76 cm³	0.107 in³
Elastic section modulus (Sy)	1.76 cm³	0.107 in³
Plastic section modulus (Zx)	2.3 cm³	0.141 in³
Plastic section modulus (Zy)	2.3 cm³	0.141 in³
Radius of gyration (rx)	1.55 cm	0.610 in
Radius of gyration (ry)	1.55 cm	0.610 in