RHS 127x63.5x4.78 CISC · Weight & Dimensions

CISC, 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 127x63.5 cal 6 (México) · Caño estructural 127x63.5 (Argentina)

The RHS 127x63.5x4.78 steel profile weighs 13.1 kg/m (8.82 lb/ft), has a depth of 127 mm (5.00 in), flange width 63.5 mm (2.50 in). Cross-sectional area: 1,670.947 mm². Moment of inertia Ix = 332.811 cm⁴, Iy = 111.804 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.78 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	127 mm	5.00 in
Width (b)	63.5 mm	2.50 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	13.1 kg/m	8.82 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,670.95 mm²	2.590 in²
Moment of inertia (Ix)	332.81 cm⁴	8.00 in⁴
Moment of inertia (Iy)	111.8 cm⁴	2.69 in⁴
Elastic section modulus (Sx)	52.41 cm³	3.198 in³
Elastic section modulus (Sy)	35.21 cm³	2.149 in³
Plastic section modulus (Zx)	66.38 cm³	4.051 in³
Plastic section modulus (Zy)	40.78 cm³	2.489 in³
Radius of gyration (rx)	4.46 cm	1.757 in
Radius of gyration (ry)	2.59 cm	1.018 in