RHS 20x15x1.1 Acindar · Weight & Dimensions

Acindar, cold-formed sections · Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 20x15 cal 18 (México) · Caño estructural 20x15 (Argentina)

The RHS 20x15x1.1 steel profile weighs 0.5 kg/m (0.36 lb/ft), has a depth of 20 mm (0.79 in), flange width 15 mm (0.59 in). Cross-sectional area: 69.044 mm². Moment of inertia Ix = 0.369 cm⁴, Iy = 0.235 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)	15 mm	0.59 in
Thickness (t)	1.1 mm	0.04 in
Fillet radius (r)	2.2 mm	0.09 in
Weight	0.5 kg/m	0.36 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	69.04 mm²	0.107 in²
Moment of inertia (Ix)	0.37 cm⁴	0.01 in⁴
Moment of inertia (Iy)	0.23 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.37 cm³	0.022 in³
Elastic section modulus (Sy)	0.31 cm³	0.019 in³
Plastic section modulus (Zx)	0.46 cm³	0.028 in³
Plastic section modulus (Zy)	0.37 cm³	0.023 in³
Radius of gyration (rx)	0.73 cm	0.288 in
Radius of gyration (ry)	0.58 cm	0.230 in