RHS 130x80x6.4 Açotubo · Weight & Dimensions

Açotubo, 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 130x80 cal 3 (México) · Caño estructural 130x80 (Argentina)

The RHS 130x80x6.4 steel profile weighs 19.0 kg/m (12.76 lb/ft), has a depth of 130 mm (5.12 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,418.679 mm². Moment of inertia Ix = 520.264 cm⁴, Iy = 242.445 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	130 mm	5.12 in
Width (b)	80 mm	3.15 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	19.0 kg/m	12.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,418.68 mm²	3.749 in²
Moment of inertia (Ix)	520.26 cm⁴	12.50 in⁴
Moment of inertia (Iy)	242.45 cm⁴	5.82 in⁴
Elastic section modulus (Sx)	80.04 cm³	4.884 in³
Elastic section modulus (Sy)	60.61 cm³	3.699 in³
Plastic section modulus (Zx)	100.51 cm³	6.133 in³
Plastic section modulus (Zy)	71.59 cm³	4.369 in³
Radius of gyration (rx)	4.64 cm	1.826 in
Radius of gyration (ry)	3.17 cm	1.246 in