RHS 305x102x6.4 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 305x102 cal 3 (México) · Caño estructural 305x102 (Argentina)

The RHS 305x102x6.4 steel profile weighs 38.4 kg/m (25.83 lb/ft), has a depth of 305 mm (12.01 in), flange width 102 mm (4.02 in). Cross-sectional area: 4,940.279 mm². Moment of inertia Ix = 5,330.425 cm⁴, Iy = 942.921 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	305 mm	12.01 in
Width (b)	102 mm	4.02 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	38.4 kg/m	25.83 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,940.28 mm²	7.657 in²
Moment of inertia (Ix)	5,330.43 cm⁴	128.06 in⁴
Moment of inertia (Iy)	942.92 cm⁴	22.65 in⁴
Elastic section modulus (Sx)	349.54 cm³	21.330 in³
Elastic section modulus (Sy)	184.89 cm³	11.283 in³
Plastic section modulus (Zx)	452.19 cm³	27.594 in³
Plastic section modulus (Zy)	206.82 cm³	12.621 in³
Radius of gyration (rx)	10.39 cm	4.090 in
Radius of gyration (ry)	4.37 cm	1.720 in