RHS 80x40x2 Cintac · Weight & Dimensions

Cintac, 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 80x40 cal 15 (México) · Caño estructural 80x40 (Argentina)

The RHS 80x40x2 steel profile weighs 3.6 kg/m (2.39 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 453.699 mm². Moment of inertia Ix = 37.357 cm⁴, Iy = 12.722 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	3.6 kg/m	2.39 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	453.7 mm²	0.703 in²
Moment of inertia (Ix)	37.36 cm⁴	0.90 in⁴
Moment of inertia (Iy)	12.72 cm⁴	0.31 in⁴
Elastic section modulus (Sx)	9.34 cm³	0.570 in³
Elastic section modulus (Sy)	6.36 cm³	0.388 in³
Plastic section modulus (Zx)	11.61 cm³	0.708 in³
Plastic section modulus (Zy)	7.17 cm³	0.438 in³
Radius of gyration (rx)	2.87 cm	1.130 in
Radius of gyration (ry)	1.67 cm	0.659 in