RHS 80x70x1.5 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 80x70 cal 16 (México) · Caño estructural 80x70 (Argentina)

The RHS 80x70x1.5 steel profile weighs 3.4 kg/m (2.30 lb/ft), has a depth of 80 mm (3.15 in), flange width 70 mm (2.76 in). Cross-sectional area: 435.206 mm². Moment of inertia Ix = 42.855 cm⁴, Iy = 34.979 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	70 mm	2.76 in
Thickness (t)	1.5 mm	0.06 in
Fillet radius (r)	3 mm	0.12 in
Weight	3.4 kg/m	2.30 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	435.21 mm²	0.675 in²
Moment of inertia (Ix)	42.86 cm⁴	1.03 in⁴
Moment of inertia (Iy)	34.98 cm⁴	0.84 in⁴
Elastic section modulus (Sx)	10.71 cm³	0.654 in³
Elastic section modulus (Sy)	9.99 cm³	0.610 in³
Plastic section modulus (Zx)	12.46 cm³	0.760 in³
Plastic section modulus (Zy)	11.39 cm³	0.695 in³
Radius of gyration (rx)	3.14 cm	1.235 in
Radius of gyration (ry)	2.84 cm	1.116 in