CHS 25.4x1.2 · Weight & Dimensions

EN — 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 25.4x1.2 steel profile weighs 0.7 kg/m (0.48 lb/ft). Cross-sectional area: 91.2 mm². Moment of inertia Ix = 0.67 cm⁴, Iy = 0.67 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)	25.4 mm	1.00 in
Weight	0.7 kg/m	0.48 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	91.2 mm²	0.141 in²
Moment of inertia (Ix)	0.67 cm⁴	0.02 in⁴
Moment of inertia (Iy)	0.67 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.53 cm³	0.032 in³
Elastic section modulus (Sy)	0.53 cm³	0.032 in³
Plastic section modulus (Zx)	0.7 cm³	0.043 in³
Plastic section modulus (Zy)	0.7 cm³	0.043 in³
Radius of gyration (rx)	0.86 cm	0.339 in
Radius of gyration (ry)	0.86 cm	0.339 in