RHS 45x25x1 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 18 (México) · Caño estructural 45x25 (Argentina)

The RHS 45x25x1 steel profile weighs 1.1 kg/m (0.71 lb/ft), has a depth of 45 mm (1.77 in), flange width 25 mm (0.98 in). Cross-sectional area: 133.425 mm². Moment of inertia Ix = 3.617 cm⁴, Iy = 1.461 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	45 mm	1.77 in
Width (b)	25 mm	0.98 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	1.1 kg/m	0.71 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	133.42 mm²	0.207 in²
Moment of inertia (Ix)	3.62 cm⁴	0.09 in⁴
Moment of inertia (Iy)	1.46 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.61 cm³	0.098 in³
Elastic section modulus (Sy)	1.17 cm³	0.071 in³
Plastic section modulus (Zx)	1.97 cm³	0.120 in³
Plastic section modulus (Zy)	1.31 cm³	0.080 in³
Radius of gyration (rx)	1.65 cm	0.648 in
Radius of gyration (ry)	1.05 cm	0.412 in