CHS 42x2.5 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 42x2.5 steel profile weighs 2.4 kg/m (1.64 lb/ft). Cross-sectional area: 310.232 mm². Moment of inertia Ix = 6.075 cm⁴, Iy = 6.075 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2.5 mm	0.10 in
Diameter (d)	42 mm	1.65 in
Weight	2.4 kg/m	1.64 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	310.23 mm²	0.481 in²
Moment of inertia (Ix)	6.07 cm⁴	0.15 in⁴
Moment of inertia (Iy)	6.07 cm⁴	0.15 in⁴
Elastic section modulus (Sx)	2.89 cm³	0.177 in³
Elastic section modulus (Sy)	2.89 cm³	0.177 in³
Plastic section modulus (Zx)	3.91 cm³	0.238 in³
Plastic section modulus (Zy)	3.91 cm³	0.238 in³
Radius of gyration (rx)	1.4 cm	0.551 in
Radius of gyration (ry)	1.4 cm	0.551 in