RHS 66x33x3.6 Tata Steel · Weight & Dimensions

Tata Steel, 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 66x33 (México) · Caño estructural 66x33 (Argentina)

The RHS 66x33x3.6 steel profile weighs 4.9 kg/m (3.31 lb/ft), has a depth of 66 mm (2.60 in), flange width 33 mm (1.30 in). Cross-sectional area: 627.585 mm². Moment of inertia Ix = 31.869 cm⁴, Iy = 10.519 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	66 mm	2.60 in
Width (b)	33 mm	1.30 in
Thickness (t)	3.6 mm	0.14 in
Fillet radius (r)	7.2 mm	0.28 in
Weight	4.9 kg/m	3.31 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	627.59 mm²	0.973 in²
Moment of inertia (Ix)	31.87 cm⁴	0.77 in⁴
Moment of inertia (Iy)	10.52 cm⁴	0.25 in⁴
Elastic section modulus (Sx)	9.66 cm³	0.589 in³
Elastic section modulus (Sy)	6.37 cm³	0.389 in³
Plastic section modulus (Zx)	12.56 cm³	0.766 in³
Plastic section modulus (Zy)	7.66 cm³	0.467 in³
Radius of gyration (rx)	2.25 cm	0.887 in
Radius of gyration (ry)	1.29 cm	0.510 in