SHS 51x51x6.4 IMCA · Weight & Dimensions

IMCA, 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 51x51 cal 3 (México) · Caño estructural 51x51 (Argentina)

The SHS 51x51x6.4 steel profile weighs 8.1 kg/m (5.41 lb/ft), has a depth of 51 mm (2.01 in), flange width 51 mm (2.01 in). Cross-sectional area: 1,036.279 mm². Moment of inertia Ix = 32.444 cm⁴, Iy = 32.444 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	51 mm	2.01 in
Width (b)	51 mm	2.01 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	8.1 kg/m	5.41 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,036.28 mm²	1.606 in²
Moment of inertia (Ix)	32.44 cm⁴	0.78 in⁴
Moment of inertia (Iy)	32.44 cm⁴	0.78 in⁴
Elastic section modulus (Sx)	12.72 cm³	0.776 in³
Elastic section modulus (Sy)	12.72 cm³	0.776 in³
Plastic section modulus (Zx)	16.66 cm³	1.017 in³
Plastic section modulus (Zy)	16.66 cm³	1.017 in³
Radius of gyration (rx)	1.77 cm	0.697 in
Radius of gyration (ry)	1.77 cm	0.697 in