U 120x75x3 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 120x75x3 (UK / Australia)

The U 120x75x3 steel profile weighs 6.1 kg/m (4.12 lb/ft), has a depth of 120 mm (4.72 in), flange width 75 mm (2.95 in). Cross-sectional area: 780.394 mm². Moment of inertia Ix = 186.921 cm⁴, Iy = 45.745 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	75 mm	2.95 in
Thickness (t)	3 mm	0.12 in
Weight	6.1 kg/m	4.12 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	780.39 mm²	1.210 in²
Moment of inertia (Ix)	186.92 cm⁴	4.49 in⁴
Moment of inertia (Iy)	45.75 cm⁴	1.10 in⁴
Elastic section modulus (Sx)	31.15 cm³	1.901 in³
Elastic section modulus (Sy)	8.68 cm³	0.529 in³
Plastic section modulus (Zx)	36.07 cm³	2.201 in³
Plastic section modulus (Zy)	11.41 cm³	0.696 in³
Radius of gyration (rx)	4.89 cm	1.927 in
Radius of gyration (ry)	2.42 cm	0.953 in