CHS 70x2 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 70x2 steel profile weighs 3.4 kg/m (2.25 lb/ft). Cross-sectional area: 427.257 mm². Moment of inertia Ix = 24.717 cm⁴, Iy = 24.717 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2 mm	0.08 in
Diameter (d)	70 mm	2.76 in
Weight	3.4 kg/m	2.25 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	427.26 mm²	0.662 in²
Moment of inertia (Ix)	24.72 cm⁴	0.59 in⁴
Moment of inertia (Iy)	24.72 cm⁴	0.59 in⁴
Elastic section modulus (Sx)	7.06 cm³	0.431 in³
Elastic section modulus (Sy)	7.06 cm³	0.431 in³
Plastic section modulus (Zx)	9.25 cm³	0.565 in³
Plastic section modulus (Zy)	9.25 cm³	0.565 in³
Radius of gyration (rx)	2.41 cm	0.947 in
Radius of gyration (ry)	2.41 cm	0.947 in