U 100x40x2.66 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Italy) · Cold-formed Channel

Cold-formed channels (U shapes) are similar to C shapes but without stiffening lips. Used for light structural framing, supports, and secondary members.

Also known as: U 100x40x2.66 (UK / Australia)

The U 100x40x2.66 steel profile weighs 3.6 kg/m (2.40 lb/ft), has a depth of 100 mm (3.94 in), flange width 40 mm (1.57 in). Cross-sectional area: 454.747 mm². Moment of inertia Ix = 66.773 cm⁴, Iy = 6.778 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	40 mm	1.57 in
Thickness (t)	2.7 mm	0.10 in
Fillet radius (r)	3 mm	0.12 in
Weight	3.6 kg/m	2.40 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	454.75 mm²	0.705 in²
Moment of inertia (Ix)	66.77 cm⁴	1.60 in⁴
Moment of inertia (Iy)	6.78 cm⁴	0.16 in⁴
Elastic section modulus (Sx)	13.35 cm³	0.815 in³
Elastic section modulus (Sy)	2.27 cm³	0.138 in³
Plastic section modulus (Zx)	16.31 cm³	0.996 in³
Plastic section modulus (Zy)	2.98 cm³	0.182 in³
Radius of gyration (rx)	3.83 cm	1.509 in
Radius of gyration (ry)	1.22 cm	0.481 in