CHS 42.2x6.4 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 42.2x6.4 steel profile weighs 5.7 kg/m (3.80 lb/ft). Cross-sectional area: 719.802 mm². Moment of inertia Ix = 11.9 cm⁴, Iy = 11.9 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6.4 mm	0.25 in
Diameter (d)	42.2 mm	1.66 in
Weight	5.7 kg/m	3.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	719.8 mm²	1.116 in²
Moment of inertia (Ix)	11.9 cm⁴	0.29 in⁴
Moment of inertia (Iy)	11.9 cm⁴	0.29 in⁴
Elastic section modulus (Sx)	5.64 cm³	0.344 in³
Elastic section modulus (Sy)	5.64 cm³	0.344 in³
Plastic section modulus (Zx)	8.29 cm³	0.506 in³
Plastic section modulus (Zy)	8.29 cm³	0.506 in³
Radius of gyration (rx)	1.29 cm	0.506 in
Radius of gyration (ry)	1.29 cm	0.506 in