SHS 20x20x1.1 Acindar · Weight & Dimensions

Acindar, cold-formed sections · Square Hollow Section

Square Hollow Sections (SHS) are tubular profiles with equal sides, ideal for columns and compression members due to their uniform buckling resistance in all directions.

Also known as: PTR 20x20 cal 18 (México) · Caño estructural 20x20 (Argentina)

The SHS 20x20x1.1 steel profile weighs 0.6 kg/m (0.42 lb/ft), has a depth of 20 mm (0.79 in), flange width 20 mm (0.79 in). Cross-sectional area: 80.044 mm². Moment of inertia Ix = 0.467 cm⁴, Iy = 0.467 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	20 mm	0.79 in
Width (b)	20 mm	0.79 in
Thickness (t)	1.1 mm	0.04 in
Fillet radius (r)	2.2 mm	0.09 in
Weight	0.6 kg/m	0.42 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	80.04 mm²	0.124 in²
Moment of inertia (Ix)	0.47 cm⁴	0.01 in⁴
Moment of inertia (Iy)	0.47 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.47 cm³	0.028 in³
Elastic section modulus (Sy)	0.47 cm³	0.028 in³
Plastic section modulus (Zx)	0.56 cm³	0.034 in³
Plastic section modulus (Zy)	0.56 cm³	0.034 in³
Radius of gyration (rx)	0.76 cm	0.301 in
Radius of gyration (ry)	0.76 cm	0.301 in