U 180 x 20,3 British Steel · Weight & Dimensions

British Steel, hot-rolled 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 180 x 20,3 (UK / Australia)

The U 180 x 20,3 steel profile weighs 20.3 kg/m (13.66 lb/ft), has a depth of 180 mm (7.09 in), flange width 75 mm (2.95 in). Cross-sectional area: 2,590.805 mm². Moment of inertia Ix = 1,370.189 cm⁴, Iy = 146.369 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	75 mm	2.95 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	10.5 mm	0.41 in
Fillet radius (r)	12 mm	0.47 in
Weight	20.3 kg/m	13.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,590.81 mm²	4.016 in²
Moment of inertia (Ix)	1,370.19 cm⁴	32.92 in⁴
Moment of inertia (Iy)	146.37 cm⁴	3.52 in⁴
Elastic section modulus (Sx)	152.24 cm³	9.290 in³
Elastic section modulus (Sy)	28.76 cm³	1.755 in³
Plastic section modulus (Zx)	176.15 cm³	10.749 in³
Plastic section modulus (Zy)	51.95 cm³	3.170 in³
Radius of gyration (rx)	7.27 cm	2.863 in
Radius of gyration (ry)	2.38 cm	0.936 in