CHS 35x3.5 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 35x3.5 steel profile weighs 2.7 kg/m (1.83 lb/ft). Cross-sectional area: 346.361 mm². Moment of inertia Ix = 4.349 cm⁴, Iy = 4.349 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.5 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.5 mm	0.14 in
Diameter (d)	35 mm	1.38 in
Weight	2.7 kg/m	1.83 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	346.36 mm²	0.537 in²
Moment of inertia (Ix)	4.35 cm⁴	0.10 in⁴
Moment of inertia (Iy)	4.35 cm⁴	0.10 in⁴
Elastic section modulus (Sx)	2.49 cm³	0.152 in³
Elastic section modulus (Sy)	2.49 cm³	0.152 in³
Plastic section modulus (Zx)	3.49 cm³	0.213 in³
Plastic section modulus (Zy)	3.49 cm³	0.213 in³
Radius of gyration (rx)	1.12 cm	0.441 in
Radius of gyration (ry)	1.12 cm	0.441 in