RHS 80x70x2 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 80x70 cal 15 (México) · Caño estructural 80x70 (Argentina)

The RHS 80x70x2 steel profile weighs 4.5 kg/m (3.02 lb/ft), has a depth of 80 mm (3.15 in), flange width 70 mm (2.76 in). Cross-sectional area: 573.699 mm². Moment of inertia Ix = 55.613 cm⁴, Iy = 45.351 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)	70 mm	2.76 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	4.5 kg/m	3.02 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	573.7 mm²	0.889 in²
Moment of inertia (Ix)	55.61 cm⁴	1.34 in⁴
Moment of inertia (Iy)	45.35 cm⁴	1.09 in⁴
Elastic section modulus (Sx)	13.9 cm³	0.848 in³
Elastic section modulus (Sy)	12.96 cm³	0.791 in³
Plastic section modulus (Zx)	16.29 cm³	0.994 in³
Plastic section modulus (Zy)	14.88 cm³	0.908 in³
Radius of gyration (rx)	3.11 cm	1.226 in
Radius of gyration (ry)	2.81 cm	1.107 in