U 120x50x3 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 120x50x3 (UK / Australia)

The U 120x50x3 steel profile weighs 5.0 kg/m (3.33 lb/ft), has a depth of 120 mm (4.72 in), flange width 50 mm (1.97 in). Cross-sectional area: 630.394 mm². Moment of inertia Ix = 135.576 cm⁴, Iy = 14.924 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	50 mm	1.97 in
Thickness (t)	3 mm	0.12 in
Weight	5.0 kg/m	3.33 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	630.39 mm²	0.977 in²
Moment of inertia (Ix)	135.58 cm⁴	3.26 in⁴
Moment of inertia (Iy)	14.92 cm⁴	0.36 in⁴
Elastic section modulus (Sx)	22.6 cm³	1.379 in³
Elastic section modulus (Sy)	4 cm³	0.244 in³
Plastic section modulus (Zx)	27.29 cm³	1.665 in³
Plastic section modulus (Zy)	5.26 cm³	0.321 in³
Radius of gyration (rx)	4.64 cm	1.826 in
Radius of gyration (ry)	1.54 cm	0.606 in