CHS 219.1x4.5 SAISC · Weight & Dimensions

SAISC, 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 219.1x4.5 steel profile weighs 23.8 kg/m (15.99 lb/ft). Cross-sectional area: 3,033.836 mm². Moment of inertia Ix = 1,747.24 cm⁴, Iy = 1,747.24 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4.5 mm	0.18 in
Diameter (d)	219.1 mm	8.63 in
Weight	23.8 kg/m	15.99 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,033.84 mm²	4.702 in²
Moment of inertia (Ix)	1,747.24 cm⁴	41.98 in⁴
Moment of inertia (Iy)	1,747.24 cm⁴	41.98 in⁴
Elastic section modulus (Sx)	159.49 cm³	9.733 in³
Elastic section modulus (Sy)	159.49 cm³	9.733 in³
Plastic section modulus (Zx)	207.27 cm³	12.648 in³
Plastic section modulus (Zy)	207.27 cm³	12.648 in³
Radius of gyration (rx)	7.59 cm	2.988 in
Radius of gyration (ry)	7.59 cm	2.988 in