RHS 20x15x1 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 20x15 cal 18 (México) · Caño estructural 20x15 (Argentina)

The RHS 20x15x1 steel profile weighs 0.5 kg/m (0.34 lb/ft), has a depth of 20 mm (0.79 in), flange width 15 mm (0.59 in). Cross-sectional area: 63.425 mm². Moment of inertia Ix = 0.343 cm⁴, Iy = 0.219 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	20 mm	0.79 in
Width (b)	15 mm	0.59 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	0.5 kg/m	0.34 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	63.42 mm²	0.098 in²
Moment of inertia (Ix)	0.34 cm⁴	0.01 in⁴
Moment of inertia (Iy)	0.22 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.34 cm³	0.021 in³
Elastic section modulus (Sy)	0.29 cm³	0.018 in³
Plastic section modulus (Zx)	0.42 cm³	0.026 in³
Plastic section modulus (Zy)	0.35 cm³	0.021 in³
Radius of gyration (rx)	0.74 cm	0.290 in
Radius of gyration (ry)	0.59 cm	0.231 in