RHS 406x305x12.7 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 406x305x12.7 steel profile weighs 133.7 kg/m (89.85 lb/ft), has a depth of 406 mm (15.98 in), flange width 305 mm (12.01 in). Cross-sectional area: 16,998.882 mm². Moment of inertia Ix = 39,967.653 cm⁴, Iy = 25,732.226 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)	12.7 mm	0.50 in
Fillet radius (r)	25.4 mm	1.00 in
Weight	133.7 kg/m	89.85 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,998.88 mm²	26.348 in²
Moment of inertia (Ix)	39,967.65 cm⁴	960.22 in⁴
Moment of inertia (Iy)	25,732.23 cm⁴	618.22 in⁴
Elastic section modulus (Sx)	1,968.85 cm³	120.147 in³
Elastic section modulus (Sy)	1,687.36 cm³	102.969 in³
Plastic section modulus (Zx)	2,359.96 cm³	144.014 in³
Plastic section modulus (Zy)	1,941.22 cm³	118.461 in³
Radius of gyration (rx)	15.33 cm	6.037 in
Radius of gyration (ry)	12.3 cm	4.844 in