CHS 42.8x4 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 42.8x4 steel profile weighs 3.8 kg/m (2.57 lb/ft). Cross-sectional area: 487.575 mm². Moment of inertia Ix = 9.273 cm⁴, Iy = 9.273 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4 mm	0.16 in
Diameter (d)	42.8 mm	1.69 in
Weight	3.8 kg/m	2.57 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	487.58 mm²	0.756 in²
Moment of inertia (Ix)	9.27 cm⁴	0.22 in⁴
Moment of inertia (Iy)	9.27 cm⁴	0.22 in⁴
Elastic section modulus (Sx)	4.33 cm³	0.264 in³
Elastic section modulus (Sy)	4.33 cm³	0.264 in³
Plastic section modulus (Zx)	6.04 cm³	0.369 in³
Plastic section modulus (Zy)	6.04 cm³	0.369 in³
Radius of gyration (rx)	1.38 cm	0.543 in
Radius of gyration (ry)	1.38 cm	0.543 in