CHS 101.6x1.25 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 101.6x1.25 steel profile weighs 3.1 kg/m (2.08 lb/ft). Cross-sectional area: 394.074 mm². Moment of inertia Ix = 49.612 cm⁴, Iy = 49.612 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.25 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.3 mm	0.05 in
Diameter (d)	101.6 mm	4.00 in
Weight	3.1 kg/m	2.08 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	394.07 mm²	0.611 in²
Moment of inertia (Ix)	49.61 cm⁴	1.19 in⁴
Moment of inertia (Iy)	49.61 cm⁴	1.19 in⁴
Elastic section modulus (Sx)	9.77 cm³	0.596 in³
Elastic section modulus (Sy)	9.77 cm³	0.596 in³
Plastic section modulus (Zx)	12.59 cm³	0.768 in³
Plastic section modulus (Zy)	12.59 cm³	0.768 in³
Radius of gyration (rx)	3.55 cm	1.397 in
Radius of gyration (ry)	3.55 cm	1.397 in