CHS 25x1.9 Gerdau · Weight & Dimensions

Gerdau, tubes · 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 25x1.9 steel profile weighs 1.1 kg/m (0.73 lb/ft). Cross-sectional area: 137.885 mm². Moment of inertia Ix = 0.926 cm⁴, Iy = 0.926 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.9 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.9 mm	0.07 in
Diameter (d)	25 mm	0.98 in
Weight	1.1 kg/m	0.73 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	137.88 mm²	0.214 in²
Moment of inertia (Ix)	0.93 cm⁴	0.02 in⁴
Moment of inertia (Iy)	0.93 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.74 cm³	0.045 in³
Elastic section modulus (Sy)	0.74 cm³	0.045 in³
Plastic section modulus (Zx)	1.02 cm³	0.062 in³
Plastic section modulus (Zy)	1.02 cm³	0.062 in³
Radius of gyration (rx)	0.82 cm	0.323 in
Radius of gyration (ry)	0.82 cm	0.323 in