CHS 46.3x3.7 Açotubo · Weight & Dimensions

Açotubo, 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 46.3x3.7 steel profile weighs 3.9 kg/m (2.61 lb/ft). Cross-sectional area: 495.178 mm². Moment of inertia Ix = 11.318 cm⁴, Iy = 11.318 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.7 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.7 mm	0.15 in
Diameter (d)	46.3 mm	1.82 in
Weight	3.9 kg/m	2.61 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	495.18 mm²	0.768 in²
Moment of inertia (Ix)	11.32 cm⁴	0.27 in⁴
Moment of inertia (Iy)	11.32 cm⁴	0.27 in⁴
Elastic section modulus (Sx)	4.89 cm³	0.298 in³
Elastic section modulus (Sy)	4.89 cm³	0.298 in³
Plastic section modulus (Zx)	6.73 cm³	0.411 in³
Plastic section modulus (Zy)	6.73 cm³	0.411 in³
Radius of gyration (rx)	1.51 cm	0.595 in
Radius of gyration (ry)	1.51 cm	0.595 in