CHS 21.3x3.2 Tata Steel · Weight & Dimensions

Tata Steel, 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 21.3x3.2 steel profile weighs 1.4 kg/m (0.96 lb/ft). Cross-sectional area: 181.961 mm². Moment of inertia Ix = 0.768 cm⁴, Iy = 0.768 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.2 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.2 mm	0.13 in
Diameter (d)	21.3 mm	0.84 in
Weight	1.4 kg/m	0.96 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	181.96 mm²	0.282 in²
Moment of inertia (Ix)	0.77 cm⁴	0.02 in⁴
Moment of inertia (Iy)	0.77 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.72 cm³	0.044 in³
Elastic section modulus (Sy)	0.72 cm³	0.044 in³
Plastic section modulus (Zx)	1.06 cm³	0.065 in³
Plastic section modulus (Zy)	1.06 cm³	0.065 in³
Radius of gyration (rx)	0.65 cm	0.256 in
Radius of gyration (ry)	0.65 cm	0.256 in