CHS 406.4x20 Iberian tables · Weight & Dimensions

Iberian tables, 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 406.4x20 steel profile weighs 190.6 kg/m (128.07 lb/ft). Cross-sectional area: 24,278.228 mm². Moment of inertia Ix = 45,432.139 cm⁴, Iy = 45,432.139 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	20 mm	0.79 in
Diameter (d)	406.4 mm	16.00 in
Weight	190.6 kg/m	128.07 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	24,278.23 mm²	37.631 in²
Moment of inertia (Ix)	45,432.14 cm⁴	1091.51 in⁴
Moment of inertia (Iy)	45,432.14 cm⁴	1091.51 in⁴
Elastic section modulus (Sx)	2,235.83 cm³	136.440 in³
Elastic section modulus (Sy)	2,235.83 cm³	136.440 in³
Plastic section modulus (Zx)	2,988.77 cm³	182.386 in³
Plastic section modulus (Zy)	2,988.77 cm³	182.386 in³
Radius of gyration (rx)	13.68 cm	5.386 in
Radius of gyration (ry)	13.68 cm	5.386 in