RHS 70x50x4.8 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 70x50 cal 6 (México) · Caño estructural 70x50 (Argentina)

The RHS 70x50x4.8 steel profile weighs 7.8 kg/m (5.28 lb/ft), has a depth of 70 mm (2.76 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,000.507 mm². Moment of inertia Ix = 61.847 cm⁴, Iy = 36.294 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.8 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	50 mm	1.97 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	7.8 kg/m	5.28 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,000.51 mm²	1.551 in²
Moment of inertia (Ix)	61.85 cm⁴	1.49 in⁴
Moment of inertia (Iy)	36.29 cm⁴	0.87 in⁴
Elastic section modulus (Sx)	17.67 cm³	1.078 in³
Elastic section modulus (Sy)	14.52 cm³	0.886 in³
Plastic section modulus (Zx)	22.38 cm³	1.366 in³
Plastic section modulus (Zy)	17.67 cm³	1.079 in³
Radius of gyration (rx)	2.49 cm	0.979 in
Radius of gyration (ry)	1.9 cm	0.750 in