RHS 90x70x6.35 Acindar · Weight & Dimensions

Acindar, 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 90x70 cal 3 (México) · Caño estructural 90x70 (Argentina)

The RHS 90x70x6.35 steel profile weighs 13.9 kg/m (9.32 lb/ft), has a depth of 90 mm (3.54 in), flange width 70 mm (2.76 in). Cross-sectional area: 1,767.416 mm². Moment of inertia Ix = 184.918 cm⁴, Iy = 124.298 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	90 mm	3.54 in
Width (b)	70 mm	2.76 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	13.9 kg/m	9.32 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,767.42 mm²	2.739 in²
Moment of inertia (Ix)	184.92 cm⁴	4.44 in⁴
Moment of inertia (Iy)	124.3 cm⁴	2.99 in⁴
Elastic section modulus (Sx)	41.09 cm³	2.508 in³
Elastic section modulus (Sy)	35.51 cm³	2.167 in³
Plastic section modulus (Zx)	51.63 cm³	3.151 in³
Plastic section modulus (Zy)	43.31 cm³	2.643 in³
Radius of gyration (rx)	3.23 cm	1.273 in
Radius of gyration (ry)	2.65 cm	1.044 in