CHS 219.1x3.5 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 219.1x3.5 steel profile weighs 18.6 kg/m (12.50 lb/ft). Cross-sectional area: 2,370.646 mm². Moment of inertia Ix = 1,377.808 cm⁴, Iy = 1,377.808 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)	219.1 mm	8.63 in
Weight	18.6 kg/m	12.50 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,370.65 mm²	3.675 in²
Moment of inertia (Ix)	1,377.81 cm⁴	33.10 in⁴
Moment of inertia (Iy)	1,377.81 cm⁴	33.10 in⁴
Elastic section modulus (Sx)	125.77 cm³	7.675 in³
Elastic section modulus (Sy)	125.77 cm³	7.675 in³
Plastic section modulus (Zx)	162.71 cm³	9.929 in³
Plastic section modulus (Zy)	162.71 cm³	9.929 in³
Radius of gyration (rx)	7.62 cm	3.001 in
Radius of gyration (ry)	7.62 cm	3.001 in