RHS 127x76x6.4 IMCA · Weight & Dimensions

IMCA, 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 127x76 cal 3 (México) · Caño estructural 127x76 (Argentina)

The RHS 127x76x6.4 steel profile weighs 18.2 kg/m (12.22 lb/ft), has a depth of 127 mm (5.00 in), flange width 76 mm (2.99 in). Cross-sectional area: 2,329.079 mm². Moment of inertia Ix = 472.018 cm⁴, Iy = 210.105 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	127 mm	5.00 in
Width (b)	76 mm	2.99 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	18.2 kg/m	12.22 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,329.08 mm²	3.610 in²
Moment of inertia (Ix)	472.02 cm⁴	11.34 in⁴
Moment of inertia (Iy)	210.11 cm⁴	5.05 in⁴
Elastic section modulus (Sx)	74.33 cm³	4.536 in³
Elastic section modulus (Sy)	55.29 cm³	3.374 in³
Plastic section modulus (Zx)	93.82 cm³	5.725 in³
Plastic section modulus (Zy)	65.47 cm³	3.995 in³
Radius of gyration (rx)	4.5 cm	1.772 in
Radius of gyration (ry)	3 cm	1.182 in