RHS 45x25x1.2 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 45x25x1.2 steel profile weighs 1.2 kg/m (0.83 lb/ft), has a depth of 45 mm (1.77 in), flange width 25 mm (0.98 in). Cross-sectional area: 158.532 mm². Moment of inertia Ix = 4.241 cm⁴, Iy = 1.706 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.2 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)	1.2 mm	0.05 in
Fillet radius (r)	2.4 mm	0.09 in
Weight	1.2 kg/m	0.83 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	158.53 mm²	0.246 in²
Moment of inertia (Ix)	4.24 cm⁴	0.10 in⁴
Moment of inertia (Iy)	1.71 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.88 cm³	0.115 in³
Elastic section modulus (Sy)	1.36 cm³	0.083 in³
Plastic section modulus (Zx)	2.32 cm³	0.142 in³
Plastic section modulus (Zy)	1.55 cm³	0.094 in³
Radius of gyration (rx)	1.64 cm	0.644 in
Radius of gyration (ry)	1.04 cm	0.408 in