CHS 48.3x3.18 CISC · Weight & Dimensions

CISC, 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 48.3x3.18 steel profile weighs 3.5 kg/m (2.38 lb/ft). Cross-sectional area: 450.761 mm². Moment of inertia Ix = 11.528 cm⁴, Iy = 11.528 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.18 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.2 mm	0.13 in
Diameter (d)	48.3 mm	1.90 in
Weight	3.5 kg/m	2.38 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	450.76 mm²	0.699 in²
Moment of inertia (Ix)	11.53 cm⁴	0.28 in⁴
Moment of inertia (Iy)	11.53 cm⁴	0.28 in⁴
Elastic section modulus (Sx)	4.77 cm³	0.291 in³
Elastic section modulus (Sy)	4.77 cm³	0.291 in³
Plastic section modulus (Zx)	6.48 cm³	0.396 in³
Plastic section modulus (Zy)	6.48 cm³	0.396 in³
Radius of gyration (rx)	1.6 cm	0.630 in
Radius of gyration (ry)	1.6 cm	0.630 in