CHS 65x3.5 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 65x3.5 steel profile weighs 5.3 kg/m (3.57 lb/ft). Cross-sectional area: 676.228 mm². Moment of inertia Ix = 32.074 cm⁴, Iy = 32.074 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)	65 mm	2.56 in
Weight	5.3 kg/m	3.57 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	676.23 mm²	1.048 in²
Moment of inertia (Ix)	32.07 cm⁴	0.77 in⁴
Moment of inertia (Iy)	32.07 cm⁴	0.77 in⁴
Elastic section modulus (Sx)	9.87 cm³	0.602 in³
Elastic section modulus (Sy)	9.87 cm³	0.602 in³
Plastic section modulus (Zx)	13.25 cm³	0.809 in³
Plastic section modulus (Zy)	13.25 cm³	0.809 in³
Radius of gyration (rx)	2.18 cm	0.857 in
Radius of gyration (ry)	2.18 cm	0.857 in