RHS 45x25x2.5 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 45x25 cal 13 (México) · Caño estructural 45x25 (Argentina)

The RHS 45x25x2.5 steel profile weighs 2.4 kg/m (1.63 lb/ft), has a depth of 45 mm (1.77 in), flange width 25 mm (0.98 in). Cross-sectional area: 308.905 mm². Moment of inertia Ix = 7.537 cm⁴, Iy = 2.961 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	45 mm	1.77 in
Width (b)	25 mm	0.98 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)	7.54 cm⁴	0.18 in⁴
Moment of inertia (Iy)	2.96 cm⁴	0.07 in⁴
Elastic section modulus (Sx)	3.35 cm³	0.204 in³
Elastic section modulus (Sy)	2.37 cm³	0.145 in³
Plastic section modulus (Zx)	4.3 cm³	0.263 in³
Plastic section modulus (Zy)	2.84 cm³	0.173 in³
Radius of gyration (rx)	1.56 cm	0.615 in
Radius of gyration (ry)	0.98 cm	0.385 in