RHS 177.8x127x6.35 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 177.8x127 cal 3 (México) · Caño estructural 177.8x127 (Argentina)

The RHS 177.8x127x6.35 steel profile weighs 28.3 kg/m (19.02 lb/ft), has a depth of 177.8 mm (7.00 in), flange width 127 mm (5.00 in). Cross-sectional area: 3,605.831 mm². Moment of inertia Ix = 1,582.267 cm⁴, Iy = 940.255 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	177.8 mm	7.00 in
Width (b)	127 mm	5.00 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	28.3 kg/m	19.02 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,605.83 mm²	5.589 in²
Moment of inertia (Ix)	1,582.27 cm⁴	38.01 in⁴
Moment of inertia (Iy)	940.25 cm⁴	22.59 in⁴
Elastic section modulus (Sx)	177.98 cm³	10.861 in³
Elastic section modulus (Sy)	148.07 cm³	9.036 in³
Plastic section modulus (Zx)	215.7 cm³	13.163 in³
Plastic section modulus (Zy)	171.23 cm³	10.449 in³
Radius of gyration (rx)	6.62 cm	2.608 in
Radius of gyration (ry)	5.11 cm	2.010 in