RHS 50x40x2 · 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 50x40 cal 15 (México) · Caño estructural 50x40 (Argentina)

The RHS 50x40x2 steel profile weighs 2.6 kg/m (1.73 lb/ft), has a depth of 50 mm (1.97 in), flange width 40 mm (1.57 in). Cross-sectional area: 344 mm². Moment of inertia Ix = 12.47 cm⁴, Iy = 8.78 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)	40 mm	1.57 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	2.6 kg/m	1.73 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	344 mm²	0.533 in²
Moment of inertia (Ix)	12.47 cm⁴	0.30 in⁴
Moment of inertia (Iy)	8.78 cm⁴	0.21 in⁴
Elastic section modulus (Sx)	4.99 cm³	0.305 in³
Elastic section modulus (Sy)	4.39 cm³	0.268 in³
Plastic section modulus (Zx)	5.96 cm³	0.364 in³
Plastic section modulus (Zy)	5.1 cm³	0.311 in³
Radius of gyration (rx)	1.9 cm	0.748 in
Radius of gyration (ry)	1.6 cm	0.630 in