CHS 88.9x1.5 Gerdau · Weight & Dimensions

Gerdau, tubes · 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 88.9x1.5 steel profile weighs 3.2 kg/m (2.17 lb/ft). Cross-sectional area: 411.863 mm². Moment of inertia Ix = 39.338 cm⁴, Iy = 39.338 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.5 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.5 mm	0.06 in
Diameter (d)	88.9 mm	3.50 in
Weight	3.2 kg/m	2.17 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	411.86 mm²	0.638 in²
Moment of inertia (Ix)	39.34 cm⁴	0.95 in⁴
Moment of inertia (Iy)	39.34 cm⁴	0.95 in⁴
Elastic section modulus (Sx)	8.85 cm³	0.540 in³
Elastic section modulus (Sy)	8.85 cm³	0.540 in³
Plastic section modulus (Zx)	11.46 cm³	0.699 in³
Plastic section modulus (Zy)	11.46 cm³	0.699 in³
Radius of gyration (rx)	3.09 cm	1.217 in
Radius of gyration (ry)	3.09 cm	1.217 in