CHS 20x1.2 Hiasa · Weight & Dimensions

Hiasa, 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 20x1.2 steel profile weighs 0.6 kg/m (0.38 lb/ft). Cross-sectional area: 70.874 mm². Moment of inertia Ix = 0.314 cm⁴, Iy = 0.314 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.2 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.2 mm	0.05 in
Diameter (d)	20 mm	0.79 in
Weight	0.6 kg/m	0.38 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	70.87 mm²	0.110 in²
Moment of inertia (Ix)	0.31 cm⁴	0.01 in⁴
Moment of inertia (Iy)	0.31 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.31 cm³	0.019 in³
Elastic section modulus (Sy)	0.31 cm³	0.019 in³
Plastic section modulus (Zx)	0.42 cm³	0.026 in³
Plastic section modulus (Zy)	0.42 cm³	0.026 in³
Radius of gyration (rx)	0.67 cm	0.262 in
Radius of gyration (ry)	0.67 cm	0.262 in