CHS 40x1.5 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 40x1.5 steel profile weighs 1.4 kg/m (0.95 lb/ft). Cross-sectional area: 181.427 mm². Moment of inertia Ix = 3.367 cm⁴, Iy = 3.367 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.5 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.5 mm	0.06 in
Diameter (d)	40 mm	1.57 in
Weight	1.4 kg/m	0.95 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	181.43 mm²	0.281 in²
Moment of inertia (Ix)	3.37 cm⁴	0.08 in⁴
Moment of inertia (Iy)	3.37 cm⁴	0.08 in⁴
Elastic section modulus (Sx)	1.68 cm³	0.103 in³
Elastic section modulus (Sy)	1.68 cm³	0.103 in³
Plastic section modulus (Zx)	2.22 cm³	0.136 in³
Plastic section modulus (Zy)	2.22 cm³	0.136 in³
Radius of gyration (rx)	1.36 cm	0.536 in
Radius of gyration (ry)	1.36 cm	0.536 in