U 120x50x4 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 120x50x4 (UK / Australia)

The U 120x50x4 steel profile weighs 6.5 kg/m (4.36 lb/ft), has a depth of 120 mm (4.72 in), flange width 50 mm (1.97 in). Cross-sectional area: 827.368 mm². Moment of inertia Ix = 174.077 cm⁴, Iy = 19.239 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)	4 mm	0.16 in
Weight	6.5 kg/m	4.36 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	827.37 mm²	1.282 in²
Moment of inertia (Ix)	174.08 cm⁴	4.18 in⁴
Moment of inertia (Iy)	19.24 cm⁴	0.46 in⁴
Elastic section modulus (Sx)	29.01 cm³	1.770 in³
Elastic section modulus (Sy)	5.22 cm³	0.319 in³
Plastic section modulus (Zx)	35.73 cm³	2.180 in³
Plastic section modulus (Zy)	6.9 cm³	0.421 in³
Radius of gyration (rx)	4.59 cm	1.806 in
Radius of gyration (ry)	1.52 cm	0.600 in