CHS 457x7.9 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 457x7.9 steel profile weighs 87.5 kg/m (58.80 lb/ft). Cross-sectional area: 11,146.025 mm². Moment of inertia Ix = 28,109.331 cm⁴, Iy = 28,109.331 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7.9 mm	0.31 in
Diameter (d)	457 mm	17.99 in
Weight	87.5 kg/m	58.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	11,146.03 mm²	17.276 in²
Moment of inertia (Ix)	28,109.33 cm⁴	675.33 in⁴
Moment of inertia (Iy)	28,109.33 cm⁴	675.33 in⁴
Elastic section modulus (Sx)	1,230.17 cm³	75.070 in³
Elastic section modulus (Sy)	1,230.17 cm³	75.070 in³
Plastic section modulus (Zx)	1,593.52 cm³	97.243 in³
Plastic section modulus (Zy)	1,593.52 cm³	97.243 in³
Radius of gyration (rx)	15.88 cm	6.252 in
Radius of gyration (ry)	15.88 cm	6.252 in