CHS 89x5.49 IMCA · Weight & Dimensions

IMCA, 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 89x5.49 steel profile weighs 11.3 kg/m (7.60 lb/ft). Cross-sectional area: 1,440.326 mm². Moment of inertia Ix = 126.102 cm⁴, Iy = 126.102 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5.49 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	5.5 mm	0.22 in
Diameter (d)	89 mm	3.50 in
Weight	11.3 kg/m	7.60 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,440.33 mm²	2.233 in²
Moment of inertia (Ix)	126.1 cm⁴	3.03 in⁴
Moment of inertia (Iy)	126.1 cm⁴	3.03 in⁴
Elastic section modulus (Sx)	28.34 cm³	1.729 in³
Elastic section modulus (Sy)	28.34 cm³	1.729 in³
Plastic section modulus (Zx)	38.34 cm³	2.340 in³
Plastic section modulus (Zy)	38.34 cm³	2.340 in³
Radius of gyration (rx)	2.96 cm	1.165 in
Radius of gyration (ry)	2.96 cm	1.165 in