CHS 48.3x4.78 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 48.3x4.78 steel profile weighs 5.1 kg/m (3.45 lb/ft). Cross-sectional area: 653.532 mm². Moment of inertia Ix = 15.659 cm⁴, Iy = 15.659 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.78 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4.8 mm	0.19 in
Diameter (d)	48.3 mm	1.90 in
Weight	5.1 kg/m	3.45 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	653.53 mm²	1.013 in²
Moment of inertia (Ix)	15.66 cm⁴	0.38 in⁴
Moment of inertia (Iy)	15.66 cm⁴	0.38 in⁴
Elastic section modulus (Sx)	6.48 cm³	0.396 in³
Elastic section modulus (Sy)	6.48 cm³	0.396 in³
Plastic section modulus (Zx)	9.09 cm³	0.555 in³
Plastic section modulus (Zy)	9.09 cm³	0.555 in³
Radius of gyration (rx)	1.55 cm	0.609 in
Radius of gyration (ry)	1.55 cm	0.609 in