CHS 90x1.5 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 90x1.5 steel profile weighs 3.3 kg/m (2.20 lb/ft). Cross-sectional area: 417.046 mm². Moment of inertia Ix = 40.842 cm⁴, Iy = 40.842 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)	90 mm	3.54 in
Weight	3.3 kg/m	2.20 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	417.05 mm²	0.646 in²
Moment of inertia (Ix)	40.84 cm⁴	0.98 in⁴
Moment of inertia (Iy)	40.84 cm⁴	0.98 in⁴
Elastic section modulus (Sx)	9.08 cm³	0.554 in³
Elastic section modulus (Sy)	9.08 cm³	0.554 in³
Plastic section modulus (Zx)	11.75 cm³	0.717 in³
Plastic section modulus (Zy)	11.75 cm³	0.717 in³
Radius of gyration (rx)	3.13 cm	1.232 in
Radius of gyration (ry)	3.13 cm	1.232 in