RHS 50x20x1.1 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 50x20 cal 18 (México) · Caño estructural 50x20 (Argentina)

The RHS 50x20x1.1 steel profile weighs 1.1 kg/m (0.77 lb/ft), has a depth of 50 mm (1.97 in), flange width 20 mm (0.79 in). Cross-sectional area: 146.044 mm². Moment of inertia Ix = 4.442 cm⁴, Iy = 1.057 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	50 mm	1.97 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	1.1 kg/m	0.77 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	146.04 mm²	0.226 in²
Moment of inertia (Ix)	4.44 cm⁴	0.11 in⁴
Moment of inertia (Iy)	1.06 cm⁴	0.03 in⁴
Elastic section modulus (Sx)	1.78 cm³	0.108 in³
Elastic section modulus (Sy)	1.06 cm³	0.065 in³
Plastic section modulus (Zx)	2.26 cm³	0.138 in³
Plastic section modulus (Zy)	1.18 cm³	0.072 in³
Radius of gyration (rx)	1.74 cm	0.687 in
Radius of gyration (ry)	0.85 cm	0.335 in