CHS 70x1.2 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 70x1.2 steel profile weighs 2.0 kg/m (1.37 lb/ft). Cross-sectional area: 259.37 mm². Moment of inertia Ix = 15.351 cm⁴, Iy = 15.351 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.2 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.2 mm	0.05 in
Diameter (d)	70 mm	2.76 in
Weight	2.0 kg/m	1.37 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	259.37 mm²	0.402 in²
Moment of inertia (Ix)	15.35 cm⁴	0.37 in⁴
Moment of inertia (Iy)	15.35 cm⁴	0.37 in⁴
Elastic section modulus (Sx)	4.39 cm³	0.268 in³
Elastic section modulus (Sy)	4.39 cm³	0.268 in³
Plastic section modulus (Zx)	5.68 cm³	0.347 in³
Plastic section modulus (Zy)	5.68 cm³	0.347 in³
Radius of gyration (rx)	2.43 cm	0.958 in
Radius of gyration (ry)	2.43 cm	0.958 in