RHS 80x40x3.6 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 (México) · Caño estructural 80x40 (Argentina)

The RHS 80x40x3.6 steel profile weighs 6.3 kg/m (4.21 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 789.91 mm². Moment of inertia Ix = 61.798 cm⁴, Iy = 20.443 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.6 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	3.6 mm	0.14 in
Fillet radius (r)	5.4 mm	0.21 in
Weight	6.3 kg/m	4.21 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	789.91 mm²	1.224 in²
Moment of inertia (Ix)	61.8 cm⁴	1.48 in⁴
Moment of inertia (Iy)	20.44 cm⁴	0.49 in⁴
Elastic section modulus (Sx)	15.45 cm³	0.943 in³
Elastic section modulus (Sy)	10.22 cm³	0.624 in³
Plastic section modulus (Zx)	19.67 cm³	1.200 in³
Plastic section modulus (Zy)	11.99 cm³	0.732 in³
Radius of gyration (rx)	2.8 cm	1.101 in
Radius of gyration (ry)	1.61 cm	0.633 in