RHS 178x127x9.5 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 178x127 (México) · Caño estructural 178x127 (Argentina)

The RHS 178x127x9.5 steel profile weighs 40.9 kg/m (27.50 lb/ft), has a depth of 178 mm (7.01 in), flange width 127 mm (5.00 in). Cross-sectional area: 5,201.586 mm². Moment of inertia Ix = 2,174.434 cm⁴, Iy = 1,280.989 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	178 mm	7.01 in
Width (b)	127 mm	5.00 in
Thickness (t)	9.5 mm	0.37 in
Fillet radius (r)	19 mm	0.75 in
Weight	40.9 kg/m	27.50 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,201.59 mm²	8.062 in²
Moment of inertia (Ix)	2,174.43 cm⁴	52.24 in⁴
Moment of inertia (Iy)	1,280.99 cm⁴	30.78 in⁴
Elastic section modulus (Sx)	244.32 cm³	14.909 in³
Elastic section modulus (Sy)	201.73 cm³	12.310 in³
Plastic section modulus (Zx)	303.11 cm³	18.497 in³
Plastic section modulus (Zy)	239.75 cm³	14.631 in³
Radius of gyration (rx)	6.47 cm	2.545 in
Radius of gyration (ry)	4.96 cm	1.954 in