CHS 508x20.6 AHMSA · Weight & Dimensions

AHMSA, 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 508x20.6 steel profile weighs 247.6 kg/m (166.39 lb/ft). Cross-sectional area: 31,542.973 mm². Moment of inertia Ix = 93,833.688 cm⁴, Iy = 93,833.688 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	20.6 mm	0.81 in
Diameter (d)	508 mm	20.00 in
Weight	247.6 kg/m	166.39 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	31,542.97 mm²	48.892 in²
Moment of inertia (Ix)	93,833.69 cm⁴	2254.35 in⁴
Moment of inertia (Iy)	93,833.69 cm⁴	2254.35 in⁴
Elastic section modulus (Sx)	3,694.24 cm³	225.437 in³
Elastic section modulus (Sy)	3,694.24 cm³	225.437 in³
Plastic section modulus (Zx)	4,896.62 cm³	298.812 in³
Plastic section modulus (Zy)	4,896.62 cm³	298.812 in³
Radius of gyration (rx)	17.25 cm	6.790 in
Radius of gyration (ry)	17.25 cm	6.790 in