RHS 80x40x6.3 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 80x40 cal 4 (México) · Caño estructural 80x40 (Argentina)

The RHS 80x40x6.3 steel profile weighs 10.3 kg/m (6.92 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 1,285.1 mm². Moment of inertia Ix = 90.654 cm⁴, Iy = 28.78 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.3 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	9.4 mm	0.37 in
Weight	10.3 kg/m	6.92 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,285.1 mm²	1.992 in²
Moment of inertia (Ix)	90.65 cm⁴	2.18 in⁴
Moment of inertia (Iy)	28.78 cm⁴	0.69 in⁴
Elastic section modulus (Sx)	22.66 cm³	1.383 in³
Elastic section modulus (Sy)	14.39 cm³	0.878 in³
Plastic section modulus (Zx)	30.26 cm³	1.847 in³
Plastic section modulus (Zy)	18.09 cm³	1.104 in³
Radius of gyration (rx)	2.66 cm	1.046 in
Radius of gyration (ry)	1.5 cm	0.589 in