RHS 203x51x7.9 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 203x51 (México) · Caño estructural 203x51 (Argentina)

The RHS 203x51x7.9 steel profile weighs 28.4 kg/m (19.09 lb/ft), has a depth of 203 mm (7.99 in), flange width 51 mm (2.01 in). Cross-sectional area: 3,602.84 mm². Moment of inertia Ix = 1,470.301 cm⁴, Iy = 147.186 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	203 mm	7.99 in
Width (b)	51 mm	2.01 in
Thickness (t)	7.9 mm	0.31 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	28.4 kg/m	19.09 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,602.84 mm²	5.584 in²
Moment of inertia (Ix)	1,470.3 cm⁴	35.32 in⁴
Moment of inertia (Iy)	147.19 cm⁴	3.54 in⁴
Elastic section modulus (Sx)	144.86 cm³	8.840 in³
Elastic section modulus (Sy)	57.72 cm³	3.522 in³
Plastic section modulus (Zx)	200.95 cm³	12.263 in³
Plastic section modulus (Zy)	70.15 cm³	4.281 in³
Radius of gyration (rx)	6.39 cm	2.515 in
Radius of gyration (ry)	2.02 cm	0.796 in