CHS 42.2x4.9 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 42.2x4.9 steel profile weighs 4.5 kg/m (3.03 lb/ft). Cross-sectional area: 574.189 mm². Moment of inertia Ix = 10.158 cm⁴, Iy = 10.158 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.9 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4.9 mm	0.19 in
Diameter (d)	42.2 mm	1.66 in
Weight	4.5 kg/m	3.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	574.19 mm²	0.890 in²
Moment of inertia (Ix)	10.16 cm⁴	0.24 in⁴
Moment of inertia (Iy)	10.16 cm⁴	0.24 in⁴
Elastic section modulus (Sx)	4.81 cm³	0.294 in³
Elastic section modulus (Sy)	4.81 cm³	0.294 in³
Plastic section modulus (Zx)	6.86 cm³	0.418 in³
Plastic section modulus (Zy)	6.86 cm³	0.418 in³
Radius of gyration (rx)	1.33 cm	0.524 in
Radius of gyration (ry)	1.33 cm	0.524 in