RHS 50x40x2.5 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 50x40 cal 13 (México) · Caño estructural 50x40 (Argentina)

The RHS 50x40x2.5 steel profile weighs 3.2 kg/m (2.16 lb/ft), has a depth of 50 mm (1.97 in), flange width 40 mm (1.57 in). Cross-sectional area: 408.905 mm². Moment of inertia Ix = 14.121 cm⁴, Iy = 9.976 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)	40 mm	1.57 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	3.2 kg/m	2.16 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	408.9 mm²	0.634 in²
Moment of inertia (Ix)	14.12 cm⁴	0.34 in⁴
Moment of inertia (Iy)	9.98 cm⁴	0.24 in⁴
Elastic section modulus (Sx)	5.65 cm³	0.345 in³
Elastic section modulus (Sy)	4.99 cm³	0.304 in³
Plastic section modulus (Zx)	6.89 cm³	0.420 in³
Plastic section modulus (Zy)	5.9 cm³	0.360 in³
Radius of gyration (rx)	1.86 cm	0.732 in
Radius of gyration (ry)	1.56 cm	0.615 in