RHS 80x30x2.5 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 80x30 cal 13 (México) · Caño estructural 80x30 (Argentina)

The RHS 80x30x2.5 steel profile weighs 4.0 kg/m (2.68 lb/ft), has a depth of 80 mm (3.15 in), flange width 30 mm (1.18 in). Cross-sectional area: 508.905 mm². Moment of inertia Ix = 37.595 cm⁴, Iy = 7.895 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	30 mm	1.18 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	4.0 kg/m	2.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	508.9 mm²	0.789 in²
Moment of inertia (Ix)	37.6 cm⁴	0.90 in⁴
Moment of inertia (Iy)	7.9 cm⁴	0.19 in⁴
Elastic section modulus (Sx)	9.4 cm³	0.574 in³
Elastic section modulus (Sy)	5.26 cm³	0.321 in³
Plastic section modulus (Zx)	12.21 cm³	0.745 in³
Plastic section modulus (Zy)	6.05 cm³	0.369 in³
Radius of gyration (rx)	2.72 cm	1.070 in
Radius of gyration (ry)	1.25 cm	0.490 in