RHS 76x51x3.6 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 (México) · Caño estructural 76x51 (Argentina)

The RHS 76x51x3.6 steel profile weighs 6.5 kg/m (4.35 lb/ft), has a depth of 76 mm (2.99 in), flange width 51 mm (2.01 in). Cross-sectional area: 829.185 mm². Moment of inertia Ix = 63.053 cm⁴, Iy = 33.784 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.6 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	76 mm	2.99 in
Width (b)	51 mm	2.01 in
Thickness (t)	3.6 mm	0.14 in
Fillet radius (r)	7.2 mm	0.28 in
Weight	6.5 kg/m	4.35 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	829.19 mm²	1.285 in²
Moment of inertia (Ix)	63.05 cm⁴	1.51 in⁴
Moment of inertia (Iy)	33.78 cm⁴	0.81 in⁴
Elastic section modulus (Sx)	16.59 cm³	1.013 in³
Elastic section modulus (Sy)	13.25 cm³	0.808 in³
Plastic section modulus (Zx)	20.57 cm³	1.255 in³
Plastic section modulus (Zy)	15.59 cm³	0.952 in³
Radius of gyration (rx)	2.76 cm	1.086 in
Radius of gyration (ry)	2.02 cm	0.795 in