RHS 508x305x7.9 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 508x305 (México) · Caño estructural 508x305 (Argentina)

The RHS 508x305x7.9 steel profile weighs 98.3 kg/m (66.02 lb/ft), has a depth of 508 mm (20.00 in), flange width 305 mm (12.01 in). Cross-sectional area: 12,435.04 mm². Moment of inertia Ix = 44,808.617 cm⁴, Iy = 20,534.388 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	508 mm	20.00 in
Width (b)	305 mm	12.01 in
Thickness (t)	7.9 mm	0.31 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	98.3 kg/m	66.02 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	12,435.04 mm²	19.274 in²
Moment of inertia (Ix)	44,808.62 cm⁴	1076.53 in⁴
Moment of inertia (Iy)	20,534.39 cm⁴	493.34 in⁴
Elastic section modulus (Sx)	1,764.12 cm³	107.654 in³
Elastic section modulus (Sy)	1,346.52 cm³	82.170 in³
Plastic section modulus (Zx)	2,121.34 cm³	129.452 in³
Plastic section modulus (Zy)	1,498.42 cm³	91.439 in³
Radius of gyration (rx)	18.98 cm	7.473 in
Radius of gyration (ry)	12.85 cm	5.059 in