CHS 65x4 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 65x4 steel profile weighs 6.0 kg/m (4.05 lb/ft). Cross-sectional area: 766.549 mm². Moment of inertia Ix = 35.807 cm⁴, Iy = 35.807 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4 mm	0.16 in
Diameter (d)	65 mm	2.56 in
Weight	6.0 kg/m	4.05 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	766.55 mm²	1.188 in²
Moment of inertia (Ix)	35.81 cm⁴	0.86 in⁴
Moment of inertia (Iy)	35.81 cm⁴	0.86 in⁴
Elastic section modulus (Sx)	11.02 cm³	0.672 in³
Elastic section modulus (Sy)	11.02 cm³	0.672 in³
Plastic section modulus (Zx)	14.91 cm³	0.910 in³
Plastic section modulus (Zy)	14.91 cm³	0.910 in³
Radius of gyration (rx)	2.16 cm	0.851 in
Radius of gyration (ry)	2.16 cm	0.851 in