U 180x80x4.75 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 180x80x4.75 (UK / Australia)

The U 180x80x4.75 steel profile weighs 12.1 kg/m (8.13 lb/ft), has a depth of 180 mm (7.09 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,540.781 mm². Moment of inertia Ix = 756.459 cm⁴, Iy = 94.973 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	80 mm	3.15 in
Thickness (t)	4.8 mm	0.19 in
Weight	12.1 kg/m	8.13 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,540.78 mm²	2.388 in²
Moment of inertia (Ix)	756.46 cm⁴	18.17 in⁴
Moment of inertia (Iy)	94.97 cm⁴	2.28 in⁴
Elastic section modulus (Sx)	84.05 cm³	5.129 in³
Elastic section modulus (Sy)	16.09 cm³	0.982 in³
Plastic section modulus (Zx)	101.09 cm³	6.169 in³
Plastic section modulus (Zy)	21.17 cm³	1.292 in³
Radius of gyration (rx)	7.01 cm	2.759 in
Radius of gyration (ry)	2.48 cm	0.977 in