RHS 508x203x7.9 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 508x203 (México) · Caño estructural 508x203 (Argentina)

The RHS 508x203x7.9 steel profile weighs 85.6 kg/m (57.50 lb/ft), has a depth of 508 mm (20.00 in), flange width 203 mm (7.99 in). Cross-sectional area: 10,823.44 mm². Moment of inertia Ix = 34,731.25 cm⁴, Iy = 8,345.181 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	508 mm	20.00 in
Width (b)	203 mm	7.99 in
Thickness (t)	7.9 mm	0.31 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	85.6 kg/m	57.50 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,823.44 mm²	16.776 in²
Moment of inertia (Ix)	34,731.25 cm⁴	834.42 in⁴
Moment of inertia (Iy)	8,345.18 cm⁴	200.49 in⁴
Elastic section modulus (Sx)	1,367.37 cm³	83.443 in³
Elastic section modulus (Sy)	822.19 cm³	50.173 in³
Plastic section modulus (Zx)	1,718.36 cm³	104.861 in³
Plastic section modulus (Zy)	905.32 cm³	55.246 in³
Radius of gyration (rx)	17.91 cm	7.052 in
Radius of gyration (ry)	8.78 cm	3.457 in