RHS 127x102x7.9 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 127x102 (México) · Caño estructural 127x102 (Argentina)

The RHS 127x102x7.9 steel profile weighs 25.2 kg/m (16.95 lb/ft), has a depth of 127 mm (5.00 in), flange width 102 mm (4.02 in). Cross-sectional area: 3,207.84 mm². Moment of inertia Ix = 691.671 cm⁴, Iy = 490.265 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	127 mm	5.00 in
Width (b)	102 mm	4.02 in
Thickness (t)	7.9 mm	0.31 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	25.2 kg/m	16.95 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,207.84 mm²	4.972 in²
Moment of inertia (Ix)	691.67 cm⁴	16.62 in⁴
Moment of inertia (Iy)	490.27 cm⁴	11.78 in⁴
Elastic section modulus (Sx)	108.92 cm³	6.647 in³
Elastic section modulus (Sy)	96.13 cm³	5.866 in³
Plastic section modulus (Zx)	134.85 cm³	8.229 in³
Plastic section modulus (Zy)	115.8 cm³	7.067 in³
Radius of gyration (rx)	4.64 cm	1.828 in
Radius of gyration (ry)	3.91 cm	1.539 in