RHS 76x51x4.8 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 76x51 cal 6 (México) · Caño estructural 76x51 (Argentina)

The RHS 76x51x4.8 steel profile weighs 8.3 kg/m (5.58 lb/ft), has a depth of 76 mm (2.99 in), flange width 51 mm (2.01 in). Cross-sectional area: 1,067.707 mm². Moment of inertia Ix = 77.411 cm⁴, Iy = 41.171 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	76 mm	2.99 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	8.3 kg/m	5.58 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,067.71 mm²	1.655 in²
Moment of inertia (Ix)	77.41 cm⁴	1.86 in⁴
Moment of inertia (Iy)	41.17 cm⁴	0.99 in⁴
Elastic section modulus (Sx)	20.37 cm³	1.243 in³
Elastic section modulus (Sy)	16.15 cm³	0.985 in³
Plastic section modulus (Zx)	25.81 cm³	1.575 in³
Plastic section modulus (Zy)	19.51 cm³	1.190 in³
Radius of gyration (rx)	2.69 cm	1.060 in
Radius of gyration (ry)	1.96 cm	0.773 in