RHS 45x30x1 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 45x30 cal 18 (México) · Caño estructural 45x30 (Argentina)

The RHS 45x30x1 steel profile weighs 1.1 kg/m (0.76 lb/ft), has a depth of 45 mm (1.77 in), flange width 30 mm (1.18 in). Cross-sectional area: 143.425 mm². Moment of inertia Ix = 4.101 cm⁴, Iy = 2.202 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)	30 mm	1.18 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	1.1 kg/m	0.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	143.42 mm²	0.222 in²
Moment of inertia (Ix)	4.1 cm⁴	0.10 in⁴
Moment of inertia (Iy)	2.2 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	1.82 cm³	0.111 in³
Elastic section modulus (Sy)	1.47 cm³	0.090 in³
Plastic section modulus (Zx)	2.19 cm³	0.133 in³
Plastic section modulus (Zy)	1.66 cm³	0.101 in³
Radius of gyration (rx)	1.69 cm	0.666 in
Radius of gyration (ry)	1.24 cm	0.488 in