U 80x40x2 IAS · Weight & Dimensions

IAS, cold-formed sections · 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 80x40x2 (UK / Australia)

The U 80x40x2 steel profile weighs 2.4 kg/m (1.62 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 306.842 mm². Moment of inertia Ix = 30.837 cm⁴, Iy = 4.893 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	2 mm	0.08 in
Weight	2.4 kg/m	1.62 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	306.84 mm²	0.476 in²
Moment of inertia (Ix)	30.84 cm⁴	0.74 in⁴
Moment of inertia (Iy)	4.89 cm⁴	0.12 in⁴
Elastic section modulus (Sx)	7.71 cm³	0.470 in³
Elastic section modulus (Sy)	1.68 cm³	0.103 in³
Plastic section modulus (Zx)	9.13 cm³	0.557 in³
Plastic section modulus (Zy)	2.21 cm³	0.135 in³
Radius of gyration (rx)	3.17 cm	1.248 in
Radius of gyration (ry)	1.26 cm	0.497 in