RHS 45x20x2 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 45x20 cal 15 (México) · Caño estructural 45x20 (Argentina)

The RHS 45x20x2 steel profile weighs 1.8 kg/m (1.23 lb/ft), has a depth of 45 mm (1.77 in), flange width 20 mm (0.79 in). Cross-sectional area: 233.699 mm². Moment of inertia Ix = 5.494 cm⁴, Iy = 1.505 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	45 mm	1.77 in
Width (b)	20 mm	0.79 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	1.8 kg/m	1.23 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	233.7 mm²	0.362 in²
Moment of inertia (Ix)	5.49 cm⁴	0.13 in⁴
Moment of inertia (Iy)	1.51 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	2.44 cm³	0.149 in³
Elastic section modulus (Sy)	1.51 cm³	0.092 in³
Plastic section modulus (Zx)	3.17 cm³	0.194 in³
Plastic section modulus (Zy)	1.78 cm³	0.108 in³
Radius of gyration (rx)	1.53 cm	0.604 in
Radius of gyration (ry)	0.8 cm	0.316 in