RHS 102x51x4.8 IMCA · Weight & Dimensions

IMCA, 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 102x51 cal 6 (México) · Caño estructural 102x51 (Argentina)

The RHS 102x51x4.8 steel profile weighs 10.2 kg/m (6.86 lb/ft), has a depth of 102 mm (4.02 in), flange width 51 mm (2.01 in). Cross-sectional area: 1,317.307 mm². Moment of inertia Ix = 163.968 cm⁴, Iy = 54.538 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	102 mm	4.02 in
Width (b)	51 mm	2.01 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	10.2 kg/m	6.86 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,317.31 mm²	2.042 in²
Moment of inertia (Ix)	163.97 cm⁴	3.94 in⁴
Moment of inertia (Iy)	54.54 cm⁴	1.31 in⁴
Elastic section modulus (Sx)	32.15 cm³	1.962 in³
Elastic section modulus (Sy)	21.39 cm³	1.305 in³
Plastic section modulus (Zx)	41.31 cm³	2.521 in³
Plastic section modulus (Zy)	25.27 cm³	1.542 in³
Radius of gyration (rx)	3.53 cm	1.389 in
Radius of gyration (ry)	2.03 cm	0.801 in