RHS 406x305x9.5 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 406x305 (México) · Caño estructural 406x305 (Argentina)

The RHS 406x305x9.5 steel profile weighs 101.8 kg/m (68.41 lb/ft), has a depth of 406 mm (15.98 in), flange width 305 mm (12.01 in). Cross-sectional area: 12,915.586 mm². Moment of inertia Ix = 31,016.784 cm⁴, Iy = 20,021.77 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	406 mm	15.98 in
Width (b)	305 mm	12.01 in
Thickness (t)	9.5 mm	0.37 in
Fillet radius (r)	19 mm	0.75 in
Weight	101.8 kg/m	68.41 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	12,915.59 mm²	20.019 in²
Moment of inertia (Ix)	31,016.78 cm⁴	745.18 in⁴
Moment of inertia (Iy)	20,021.77 cm⁴	481.02 in⁴
Elastic section modulus (Sx)	1,527.92 cm³	93.240 in³
Elastic section modulus (Sy)	1,312.9 cm³	80.119 in³
Plastic section modulus (Zx)	1,813.5 cm³	110.667 in³
Plastic section modulus (Zy)	1,493.25 cm³	91.124 in³
Radius of gyration (rx)	15.5 cm	6.101 in
Radius of gyration (ry)	12.45 cm	4.902 in