CHS 31.75x0.8 Acindar · Weight & Dimensions

Acindar, 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 31.75x0.8 steel profile weighs 0.6 kg/m (0.41 lb/ft). Cross-sectional area: 77.786 mm². Moment of inertia Ix = 0.932 cm⁴, Iy = 0.932 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 0.8 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	0.8 mm	0.03 in
Diameter (d)	31.8 mm	1.25 in
Weight	0.6 kg/m	0.41 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	77.79 mm²	0.121 in²
Moment of inertia (Ix)	0.93 cm⁴	0.02 in⁴
Moment of inertia (Iy)	0.93 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.59 cm³	0.036 in³
Elastic section modulus (Sy)	0.59 cm³	0.036 in³
Plastic section modulus (Zx)	0.77 cm³	0.047 in³
Plastic section modulus (Zy)	0.77 cm³	0.047 in³
Radius of gyration (rx)	1.09 cm	0.431 in
Radius of gyration (ry)	1.09 cm	0.431 in