SHS 85x85x6.4 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 cal 3 (México) · Caño estructural 85x85 (Argentina)

The SHS 85x85x6.4 steel profile weighs 15.0 kg/m (10.06 lb/ft), has a depth of 85 mm (3.35 in), flange width 85 mm (3.35 in). Cross-sectional area: 1,906.679 mm². Moment of inertia Ix = 190.608 cm⁴, Iy = 190.608 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	85 mm	3.35 in
Width (b)	85 mm	3.35 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	15.0 kg/m	10.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,906.68 mm²	2.955 in²
Moment of inertia (Ix)	190.61 cm⁴	4.58 in⁴
Moment of inertia (Iy)	190.61 cm⁴	4.58 in⁴
Elastic section modulus (Sx)	44.85 cm³	2.737 in³
Elastic section modulus (Sy)	44.85 cm³	2.737 in³
Plastic section modulus (Zx)	55.08 cm³	3.361 in³
Plastic section modulus (Zy)	55.08 cm³	3.361 in³
Radius of gyration (rx)	3.16 cm	1.245 in
Radius of gyration (ry)	3.16 cm	1.245 in