RHS 127x50.8x6.35 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 127x50.8 cal 3 (México) · Caño estructural 127x50.8 (Argentina)

The RHS 127x50.8x6.35 steel profile weighs 15.6 kg/m (10.51 lb/ft), has a depth of 127 mm (5.00 in), flange width 50.8 mm (2.00 in). Cross-sectional area: 1,992.931 mm². Moment of inertia Ix = 352.762 cm⁴, Iy = 80.018 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.35 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	127 mm	5.00 in
Width (b)	50.8 mm	2.00 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	15.6 kg/m	10.51 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,992.93 mm²	3.089 in²
Moment of inertia (Ix)	352.76 cm⁴	8.48 in⁴
Moment of inertia (Iy)	80.02 cm⁴	1.92 in⁴
Elastic section modulus (Sx)	55.55 cm³	3.390 in³
Elastic section modulus (Sy)	31.5 cm³	1.922 in³
Plastic section modulus (Zx)	73.93 cm³	4.511 in³
Plastic section modulus (Zy)	37.94 cm³	2.315 in³
Radius of gyration (rx)	4.21 cm	1.656 in
Radius of gyration (ry)	2 cm	0.789 in