RHS 50x20x2 · Weight & Dimensions

BR — 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 15 (México) · Caño estructural 50x20 (Argentina)

The RHS 50x20x2 steel profile weighs 2.0 kg/m (1.32 lb/ft), has a depth of 50 mm (1.97 in), flange width 20 mm (0.79 in). Cross-sectional area: 264 mm². Moment of inertia Ix = 7.86 cm⁴, Iy = 1.76 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	50 mm	1.97 in
Width (b)	20 mm	0.79 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	2.0 kg/m	1.32 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	264 mm²	0.409 in²
Moment of inertia (Ix)	7.86 cm⁴	0.19 in⁴
Moment of inertia (Iy)	1.76 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	3.14 cm³	0.192 in³
Elastic section modulus (Sy)	1.76 cm³	0.107 in³
Plastic section modulus (Zx)	4.04 cm³	0.247 in³
Plastic section modulus (Zy)	2.06 cm³	0.126 in³
Radius of gyration (rx)	1.72 cm	0.677 in
Radius of gyration (ry)	0.82 cm	0.323 in