RHS 177.8x127x12.7 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 177.8x127 (México) · Caño estructural 177.8x127 (Argentina)

The RHS 177.8x127x12.7 steel profile weighs 52.5 kg/m (35.25 lb/ft), has a depth of 177.8 mm (7.00 in), flange width 127 mm (5.00 in). Cross-sectional area: 6,681.402 mm². Moment of inertia Ix = 2,641.51 cm⁴, Iy = 1,548.565 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	177.8 mm	7.00 in
Width (b)	127 mm	5.00 in
Thickness (t)	12.7 mm	0.50 in
Fillet radius (r)	25.4 mm	1.00 in
Weight	52.5 kg/m	35.25 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,681.4 mm²	10.356 in²
Moment of inertia (Ix)	2,641.51 cm⁴	63.46 in⁴
Moment of inertia (Iy)	1,548.56 cm⁴	37.20 in⁴
Elastic section modulus (Sx)	297.13 cm³	18.132 in³
Elastic section modulus (Sy)	243.87 cm³	14.882 in³
Plastic section modulus (Zx)	377.84 cm³	23.057 in³
Plastic section modulus (Zy)	298.26 cm³	18.201 in³
Radius of gyration (rx)	6.29 cm	2.475 in
Radius of gyration (ry)	4.81 cm	1.895 in