RHS 180x100x4 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 180x100 cal 8 (México) · Caño estructural 180x100 (Argentina)

The RHS 180x100x4 steel profile weighs 16.8 kg/m (11.29 lb/ft), has a depth of 180 mm (7.09 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,134.796 mm². Moment of inertia Ix = 926.043 cm⁴, Iy = 373.893 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	100 mm	3.94 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	16.8 kg/m	11.29 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,134.8 mm²	3.309 in²
Moment of inertia (Ix)	926.04 cm⁴	22.25 in⁴
Moment of inertia (Iy)	373.89 cm⁴	8.98 in⁴
Elastic section modulus (Sx)	102.89 cm³	6.279 in³
Elastic section modulus (Sy)	74.78 cm³	4.563 in³
Plastic section modulus (Zx)	125.89 cm³	7.682 in³
Plastic section modulus (Zy)	84.02 cm³	5.127 in³
Radius of gyration (rx)	6.59 cm	2.593 in
Radius of gyration (ry)	4.18 cm	1.648 in