CHS 31.75x0.9 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 31.75x0.9 steel profile weighs 0.7 kg/m (0.46 lb/ft). Cross-sectional area: 87.226 mm². Moment of inertia Ix = 1.039 cm⁴, Iy = 1.039 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 0.9 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	0.9 mm	0.04 in
Diameter (d)	31.8 mm	1.25 in
Weight	0.7 kg/m	0.46 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	87.23 mm²	0.135 in²
Moment of inertia (Ix)	1.04 cm⁴	0.02 in⁴
Moment of inertia (Iy)	1.04 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.65 cm³	0.040 in³
Elastic section modulus (Sy)	0.65 cm³	0.040 in³
Plastic section modulus (Zx)	0.86 cm³	0.052 in³
Plastic section modulus (Zy)	0.86 cm³	0.052 in³
Radius of gyration (rx)	1.09 cm	0.430 in
Radius of gyration (ry)	1.09 cm	0.430 in