CHS 21.3x2 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 21.3x2 steel profile weighs 0.9 kg/m (0.64 lb/ft). Cross-sectional area: 121.265 mm². Moment of inertia Ix = 0.571 cm⁴, Iy = 0.571 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2 mm	0.08 in
Diameter (d)	21.3 mm	0.84 in
Weight	0.9 kg/m	0.64 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	121.27 mm²	0.188 in²
Moment of inertia (Ix)	0.57 cm⁴	0.01 in⁴
Moment of inertia (Iy)	0.57 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.54 cm³	0.033 in³
Elastic section modulus (Sy)	0.54 cm³	0.033 in³
Plastic section modulus (Zx)	0.75 cm³	0.046 in³
Plastic section modulus (Zy)	0.75 cm³	0.046 in³
Radius of gyration (rx)	0.69 cm	0.270 in
Radius of gyration (ry)	0.69 cm	0.270 in