CHS 38x3 SAISC · Weight & Dimensions

SAISC, 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 38x3 steel profile weighs 2.6 kg/m (1.75 lb/ft). Cross-sectional area: 329.867 mm². Moment of inertia Ix = 5.088 cm⁴, Iy = 5.088 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3 mm	0.12 in
Diameter (d)	38 mm	1.50 in
Weight	2.6 kg/m	1.75 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	329.87 mm²	0.511 in²
Moment of inertia (Ix)	5.09 cm⁴	0.12 in⁴
Moment of inertia (Iy)	5.09 cm⁴	0.12 in⁴
Elastic section modulus (Sx)	2.68 cm³	0.163 in³
Elastic section modulus (Sy)	2.68 cm³	0.163 in³
Plastic section modulus (Zx)	3.68 cm³	0.225 in³
Plastic section modulus (Zy)	3.68 cm³	0.225 in³
Radius of gyration (rx)	1.24 cm	0.489 in
Radius of gyration (ry)	1.24 cm	0.489 in