RHS 50x20x2.5 Hiasa · Weight & Dimensions

Hiasa, 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 13 (México) · Caño estructural 50x20 (Argentina)

The RHS 50x20x2.5 steel profile weighs 2.4 kg/m (1.63 lb/ft), has a depth of 50 mm (1.97 in), flange width 20 mm (0.79 in). Cross-sectional area: 308.905 mm². Moment of inertia Ix = 8.475 cm⁴, Iy = 1.922 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	50 mm	1.97 in
Width (b)	20 mm	0.79 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	2.4 kg/m	1.63 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	308.9 mm²	0.479 in²
Moment of inertia (Ix)	8.48 cm⁴	0.20 in⁴
Moment of inertia (Iy)	1.92 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	3.39 cm³	0.207 in³
Elastic section modulus (Sy)	1.92 cm³	0.117 in³
Plastic section modulus (Zx)	4.51 cm³	0.275 in³
Plastic section modulus (Zy)	2.32 cm³	0.141 in³
Radius of gyration (rx)	1.66 cm	0.652 in
Radius of gyration (ry)	0.79 cm	0.311 in