CHS 508x38.1 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 508x38.1 steel profile weighs 441.5 kg/m (296.70 lb/ft). Cross-sectional area: 56,244.53 mm². Moment of inertia Ix = 156,259.693 cm⁴, Iy = 156,259.693 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	38.1 mm	1.50 in
Diameter (d)	508 mm	20.00 in
Weight	441.5 kg/m	296.70 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	56,244.53 mm²	87.179 in²
Moment of inertia (Ix)	156,259.69 cm⁴	3754.14 in⁴
Moment of inertia (Iy)	156,259.69 cm⁴	3754.14 in⁴
Elastic section modulus (Sx)	6,151.96 cm³	375.417 in³
Elastic section modulus (Sy)	6,151.96 cm³	375.417 in³
Plastic section modulus (Zx)	8,431.14 cm³	514.502 in³
Plastic section modulus (Zy)	8,431.14 cm³	514.502 in³
Radius of gyration (rx)	16.67 cm	6.562 in
Radius of gyration (ry)	16.67 cm	6.562 in