RHS 300x180x8.8 V&M do Brasil · Weight & Dimensions

V&M do Brasil, hot-rolled 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 300x180 (México) · Caño estructural 300x180 (Argentina)

The RHS 300x180x8.8 steel profile weighs 62.3 kg/m (41.88 lb/ft), has a depth of 300 mm (11.81 in), flange width 180 mm (7.09 in). Cross-sectional area: 7,938.815 mm². Moment of inertia Ix = 9,582.402 cm⁴, Iy = 4,344.929 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	180 mm	7.09 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	62.3 kg/m	41.88 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,938.81 mm²	12.305 in²
Moment of inertia (Ix)	9,582.4 cm⁴	230.22 in⁴
Moment of inertia (Iy)	4,344.93 cm⁴	104.39 in⁴
Elastic section modulus (Sx)	638.83 cm³	38.984 in³
Elastic section modulus (Sy)	482.77 cm³	29.461 in³
Plastic section modulus (Zx)	782.58 cm³	47.756 in³
Plastic section modulus (Zy)	550.39 cm³	33.587 in³
Radius of gyration (rx)	10.99 cm	4.325 in
Radius of gyration (ry)	7.4 cm	2.913 in