RHS 55x15x1.5 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 55x15 cal 16 (México) · Caño estructural 55x15 (Argentina)

The RHS 55x15x1.5 steel profile weighs 1.5 kg/m (1.03 lb/ft), has a depth of 55 mm (2.17 in), flange width 15 mm (0.59 in). Cross-sectional area: 195.206 mm². Moment of inertia Ix = 6.307 cm⁴, Iy = 0.768 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.5 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	55 mm	2.17 in
Width (b)	15 mm	0.59 in
Thickness (t)	1.5 mm	0.06 in
Fillet radius (r)	3 mm	0.12 in
Weight	1.5 kg/m	1.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	195.21 mm²	0.303 in²
Moment of inertia (Ix)	6.31 cm⁴	0.15 in⁴
Moment of inertia (Iy)	0.77 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	2.29 cm³	0.140 in³
Elastic section modulus (Sy)	1.02 cm³	0.062 in³
Plastic section modulus (Zx)	3.07 cm³	0.188 in³
Plastic section modulus (Zy)	1.18 cm³	0.072 in³
Radius of gyration (rx)	1.8 cm	0.708 in
Radius of gyration (ry)	0.63 cm	0.247 in