RHS 305x203x7.9 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 305x203 (México) · Caño estructural 305x203 (Argentina)

The RHS 305x203x7.9 steel profile weighs 60.3 kg/m (40.49 lb/ft), has a depth of 305 mm (12.01 in), flange width 203 mm (7.99 in). Cross-sectional area: 7,616.04 mm². Moment of inertia Ix = 9,897.745 cm⁴, Iy = 5,291.35 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	305 mm	12.01 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	60.3 kg/m	40.49 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,616.04 mm²	11.805 in²
Moment of inertia (Ix)	9,897.75 cm⁴	237.79 in⁴
Moment of inertia (Iy)	5,291.35 cm⁴	127.12 in⁴
Elastic section modulus (Sx)	649.03 cm³	39.607 in³
Elastic section modulus (Sy)	521.32 cm³	31.813 in³
Plastic section modulus (Zx)	782.55 cm³	47.755 in³
Plastic section modulus (Zy)	592.44 cm³	36.153 in³
Radius of gyration (rx)	11.4 cm	4.488 in
Radius of gyration (ry)	8.34 cm	3.282 in