RHS 80x50x2.5 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 80x50 cal 13 (México) · Caño estructural 80x50 (Argentina)

The RHS 80x50x2.5 steel profile weighs 4.8 kg/m (3.21 lb/ft), has a depth of 80 mm (3.15 in), flange width 50 mm (1.97 in). Cross-sectional area: 608.905 mm². Moment of inertia Ix = 52.616 cm⁴, Iy = 25.413 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	50 mm	1.97 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	4.8 kg/m	3.21 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	608.9 mm²	0.944 in²
Moment of inertia (Ix)	52.62 cm⁴	1.26 in⁴
Moment of inertia (Iy)	25.41 cm⁴	0.61 in⁴
Elastic section modulus (Sx)	13.15 cm³	0.803 in³
Elastic section modulus (Sy)	10.17 cm³	0.620 in³
Plastic section modulus (Zx)	16.08 cm³	0.981 in³
Plastic section modulus (Zy)	11.64 cm³	0.710 in³
Radius of gyration (rx)	2.94 cm	1.157 in
Radius of gyration (ry)	2.04 cm	0.804 in