CHS 42x3 Hiasa · Weight & Dimensions

Hiasa, 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 42x3 steel profile weighs 2.9 kg/m (1.94 lb/ft). Cross-sectional area: 367.566 mm². Moment of inertia Ix = 7.03 cm⁴, Iy = 7.03 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)	42 mm	1.65 in
Weight	2.9 kg/m	1.94 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	367.57 mm²	0.570 in²
Moment of inertia (Ix)	7.03 cm⁴	0.17 in⁴
Moment of inertia (Iy)	7.03 cm⁴	0.17 in⁴
Elastic section modulus (Sx)	3.35 cm³	0.204 in³
Elastic section modulus (Sy)	3.35 cm³	0.204 in³
Plastic section modulus (Zx)	4.57 cm³	0.279 in³
Plastic section modulus (Zy)	4.57 cm³	0.279 in³
Radius of gyration (rx)	1.38 cm	0.544 in
Radius of gyration (ry)	1.38 cm	0.544 in