RHS 140x80x4 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 140x80 cal 8 (México) · Caño estructural 140x80 (Argentina)

The RHS 140x80x4 steel profile weighs 13.0 kg/m (8.74 lb/ft), has a depth of 140 mm (5.51 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,654.796 mm². Moment of inertia Ix = 429.6 cm⁴, Iy = 180.419 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	140 mm	5.51 in
Width (b)	80 mm	3.15 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	13.0 kg/m	8.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,654.8 mm²	2.565 in²
Moment of inertia (Ix)	429.6 cm⁴	10.32 in⁴
Moment of inertia (Iy)	180.42 cm⁴	4.33 in⁴
Elastic section modulus (Sx)	61.37 cm³	3.745 in³
Elastic section modulus (Sy)	45.1 cm³	2.752 in³
Plastic section modulus (Zx)	75.51 cm³	4.608 in³
Plastic section modulus (Zy)	51.31 cm³	3.131 in³
Radius of gyration (rx)	5.1 cm	2.006 in
Radius of gyration (ry)	3.3 cm	1.300 in