RHS 340x180x6 SAISC · Weight & Dimensions

SAISC, 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 340x180 cal 4 (México) · Caño estructural 340x180 (Argentina)

The RHS 340x180x6 steel profile weighs 47.1 kg/m (31.66 lb/ft), has a depth of 340 mm (13.39 in), flange width 180 mm (7.09 in). Cross-sectional area: 6,003.292 mm². Moment of inertia Ix = 9,289.073 cm⁴, Iy = 3,490.346 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	340 mm	13.39 in
Width (b)	180 mm	7.09 in
Thickness (t)	6 mm	0.24 in
Fillet radius (r)	12 mm	0.47 in
Weight	47.1 kg/m	31.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,003.29 mm²	9.305 in²
Moment of inertia (Ix)	9,289.07 cm⁴	223.17 in⁴
Moment of inertia (Iy)	3,490.35 cm⁴	83.86 in⁴
Elastic section modulus (Sx)	546.42 cm³	33.344 in³
Elastic section modulus (Sy)	387.82 cm³	23.666 in³
Plastic section modulus (Zx)	667.82 cm³	40.753 in³
Plastic section modulus (Zy)	431.39 cm³	26.325 in³
Radius of gyration (rx)	12.44 cm	4.897 in
Radius of gyration (ry)	7.62 cm	3.002 in