RHS 80x20x2 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 80x20 cal 15 (México) · Caño estructural 80x20 (Argentina)

The RHS 80x20x2 steel profile weighs 2.9 kg/m (1.97 lb/ft), has a depth of 80 mm (3.15 in), flange width 20 mm (0.79 in). Cross-sectional area: 373.699 mm². Moment of inertia Ix = 25.186 cm⁴, Iy = 2.644 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	20 mm	0.79 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	2.9 kg/m	1.97 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	373.7 mm²	0.579 in²
Moment of inertia (Ix)	25.19 cm⁴	0.61 in⁴
Moment of inertia (Iy)	2.64 cm⁴	0.06 in⁴
Elastic section modulus (Sx)	6.3 cm³	0.384 in³
Elastic section modulus (Sy)	2.64 cm³	0.161 in³
Plastic section modulus (Zx)	8.49 cm³	0.518 in³
Plastic section modulus (Zy)	3.04 cm³	0.185 in³
Radius of gyration (rx)	2.6 cm	1.022 in
Radius of gyration (ry)	0.84 cm	0.331 in