RHS 400x300x8 Tata Steel Celsius · Weight & Dimensions

Tata Steel Celsius · 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 400x300 (México) · Caño estructural 400x300 (Argentina)

The RHS 400x300x8 steel profile weighs 85.4 kg/m (57.39 lb/ft), has a depth of 400 mm (15.75 in), flange width 300 mm (11.81 in). Cross-sectional area: 10,834.124 mm². Moment of inertia Ix = 25,560.808 cm⁴, Iy = 16,458.839 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	300 mm	11.81 in
Thickness (t)	8 mm	0.31 in
Fillet radius (r)	12 mm	0.47 in
Weight	85.4 kg/m	57.39 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,834.12 mm²	16.793 in²
Moment of inertia (Ix)	25,560.81 cm⁴	614.10 in⁴
Moment of inertia (Iy)	16,458.84 cm⁴	395.42 in⁴
Elastic section modulus (Sx)	1,278.04 cm³	77.991 in³
Elastic section modulus (Sy)	1,097.26 cm³	66.959 in³
Plastic section modulus (Zx)	1,508.86 cm³	92.077 in³
Plastic section modulus (Zy)	1,240.75 cm³	75.716 in³
Radius of gyration (rx)	15.36 cm	6.047 in
Radius of gyration (ry)	12.33 cm	4.853 in