CHS 88.9x1.6 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 88.9x1.6 steel profile weighs 3.4 kg/m (2.31 lb/ft). Cross-sectional area: 438.818 mm². Moment of inertia Ix = 41.819 cm⁴, Iy = 41.819 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.6 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.6 mm	0.06 in
Diameter (d)	88.9 mm	3.50 in
Weight	3.4 kg/m	2.31 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	438.82 mm²	0.680 in²
Moment of inertia (Ix)	41.82 cm⁴	1.00 in⁴
Moment of inertia (Iy)	41.82 cm⁴	1.00 in⁴
Elastic section modulus (Sx)	9.41 cm³	0.574 in³
Elastic section modulus (Sy)	9.41 cm³	0.574 in³
Plastic section modulus (Zx)	12.2 cm³	0.744 in³
Plastic section modulus (Zy)	12.2 cm³	0.744 in³
Radius of gyration (rx)	3.09 cm	1.215 in
Radius of gyration (ry)	3.09 cm	1.215 in