RHS 100x50x6.4 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 100x50 cal 3 (México) · Caño estructural 100x50 (Argentina)

The RHS 100x50x6.4 steel profile weighs 13.0 kg/m (8.71 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,650.679 mm². Moment of inertia Ix = 186.042 cm⁴, Iy = 60.825 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	50 mm	1.97 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	13.0 kg/m	8.71 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,650.68 mm²	2.559 in²
Moment of inertia (Ix)	186.04 cm⁴	4.47 in⁴
Moment of inertia (Iy)	60.82 cm⁴	1.46 in⁴
Elastic section modulus (Sx)	37.21 cm³	2.271 in³
Elastic section modulus (Sy)	24.33 cm³	1.485 in³
Plastic section modulus (Zx)	49.14 cm³	2.999 in³
Plastic section modulus (Zy)	29.82 cm³	1.820 in³
Radius of gyration (rx)	3.36 cm	1.322 in
Radius of gyration (ry)	1.92 cm	0.756 in