RHS 70x50x4 Tata Steel Hybox · Weight & Dimensions

Tata Steel Hybox · 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 8 (México) · Caño estructural 70x50 (Argentina)

The RHS 70x50x4 steel profile weighs 6.7 kg/m (4.51 lb/ft), has a depth of 70 mm (2.76 in), flange width 50 mm (1.97 in). Cross-sectional area: 854.796 mm². Moment of inertia Ix = 54.675 cm⁴, Iy = 32.221 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 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 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	6.7 kg/m	4.51 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	854.8 mm²	1.325 in²
Moment of inertia (Ix)	54.67 cm⁴	1.31 in⁴
Moment of inertia (Iy)	32.22 cm⁴	0.77 in⁴
Elastic section modulus (Sx)	15.62 cm³	0.953 in³
Elastic section modulus (Sy)	12.89 cm³	0.787 in³
Plastic section modulus (Zx)	19.48 cm³	1.189 in³
Plastic section modulus (Zy)	15.41 cm³	0.940 in³
Radius of gyration (rx)	2.53 cm	0.996 in
Radius of gyration (ry)	1.94 cm	0.764 in