RHS 122x61x4.5 Tata Steel · Weight & Dimensions

Tata Steel, 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 122x61 cal 6 (México) · Caño estructural 122x61 (Argentina)

The RHS 122x61x4.5 steel profile weighs 11.9 kg/m (7.98 lb/ft), has a depth of 122 mm (4.80 in), flange width 61 mm (2.40 in). Cross-sectional area: 1,513.852 mm². Moment of inertia Ix = 278.94 cm⁴, Iy = 93.782 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	122 mm	4.80 in
Width (b)	61 mm	2.40 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	9 mm	0.35 in
Weight	11.9 kg/m	7.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,513.85 mm²	2.346 in²
Moment of inertia (Ix)	278.94 cm⁴	6.70 in⁴
Moment of inertia (Iy)	93.78 cm⁴	2.25 in⁴
Elastic section modulus (Sx)	45.73 cm³	2.790 in³
Elastic section modulus (Sy)	30.75 cm³	1.876 in³
Plastic section modulus (Zx)	57.85 cm³	3.530 in³
Plastic section modulus (Zy)	35.56 cm³	2.170 in³
Radius of gyration (rx)	4.29 cm	1.690 in
Radius of gyration (ry)	2.49 cm	0.980 in