SHS 85x85x4.4 Açotubo · Weight & Dimensions

Açotubo, cold-formed sections · Square Hollow Section

Square Hollow Sections (SHS) are tubular profiles with equal sides, ideal for columns and compression members due to their uniform buckling resistance in all directions.

Also known as: PTR 85x85 (México) · Caño estructural 85x85 (Argentina)

The SHS 85x85x4.4 steel profile weighs 10.7 kg/m (7.22 lb/ft), has a depth of 85 mm (3.35 in), flange width 85 mm (3.35 in). Cross-sectional area: 1,368.704 mm². Moment of inertia Ix = 145.399 cm⁴, Iy = 145.399 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.4 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	85 mm	3.35 in
Width (b)	85 mm	3.35 in
Thickness (t)	4.4 mm	0.17 in
Fillet radius (r)	8.8 mm	0.35 in
Weight	10.7 kg/m	7.22 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,368.7 mm²	2.121 in²
Moment of inertia (Ix)	145.4 cm⁴	3.49 in⁴
Moment of inertia (Iy)	145.4 cm⁴	3.49 in⁴
Elastic section modulus (Sx)	34.21 cm³	2.088 in³
Elastic section modulus (Sy)	34.21 cm³	2.088 in³
Plastic section modulus (Zx)	40.84 cm³	2.492 in³
Plastic section modulus (Zy)	40.84 cm³	2.492 in³
Radius of gyration (rx)	3.26 cm	1.283 in
Radius of gyration (ry)	3.26 cm	1.283 in