RHS 180x130x6.4 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 180x130 cal 3 (México) · Caño estructural 180x130 (Argentina)

The RHS 180x130x6.4 steel profile weighs 29.0 kg/m (19.51 lb/ft), has a depth of 180 mm (7.09 in), flange width 130 mm (5.12 in). Cross-sectional area: 3,698.679 mm². Moment of inertia Ix = 1,669.716 cm⁴, Iy = 1,009.563 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	130 mm	5.12 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	29.0 kg/m	19.51 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,698.68 mm²	5.733 in²
Moment of inertia (Ix)	1,669.72 cm⁴	40.11 in⁴
Moment of inertia (Iy)	1,009.56 cm⁴	24.25 in⁴
Elastic section modulus (Sx)	185.52 cm³	11.321 in³
Elastic section modulus (Sy)	155.32 cm³	9.478 in³
Plastic section modulus (Zx)	224.53 cm³	13.702 in³
Plastic section modulus (Zy)	179.61 cm³	10.961 in³
Radius of gyration (rx)	6.72 cm	2.645 in
Radius of gyration (ry)	5.22 cm	2.057 in