CHS 65x1 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 65x1 steel profile weighs 1.6 kg/m (1.06 lb/ft). Cross-sectional area: 201.062 mm². Moment of inertia Ix = 10.297 cm⁴, Iy = 10.297 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1 mm	0.04 in
Diameter (d)	65 mm	2.56 in
Weight	1.6 kg/m	1.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	201.06 mm²	0.312 in²
Moment of inertia (Ix)	10.3 cm⁴	0.25 in⁴
Moment of inertia (Iy)	10.3 cm⁴	0.25 in⁴
Elastic section modulus (Sx)	3.17 cm³	0.193 in³
Elastic section modulus (Sy)	3.17 cm³	0.193 in³
Plastic section modulus (Zx)	4.1 cm³	0.250 in³
Plastic section modulus (Zy)	4.1 cm³	0.250 in³
Radius of gyration (rx)	2.26 cm	0.891 in
Radius of gyration (ry)	2.26 cm	0.891 in