U 120x40x3 Arval · Weight & Dimensions

Arval, 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 120x40x3 (UK / Australia)

The U 120x40x3 steel profile weighs 4.5 kg/m (3.00 lb/ft), has a depth of 120 mm (4.72 in), flange width 40 mm (1.57 in). Cross-sectional area: 567.815 mm². Moment of inertia Ix = 114.106 cm⁴, Iy = 7.937 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	40 mm	1.57 in
Thickness (t)	3 mm	0.12 in
Fillet radius (r)	4 mm	0.16 in
Weight	4.5 kg/m	3.00 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	567.82 mm²	0.880 in²
Moment of inertia (Ix)	114.11 cm⁴	2.74 in⁴
Moment of inertia (Iy)	7.94 cm⁴	0.19 in⁴
Elastic section modulus (Sx)	19.02 cm³	1.161 in³
Elastic section modulus (Sy)	2.59 cm³	0.158 in³
Plastic section modulus (Zx)	23.78 cm³	1.451 in³
Plastic section modulus (Zy)	3.41 cm³	0.208 in³
Radius of gyration (rx)	4.48 cm	1.765 in
Radius of gyration (ry)	1.18 cm	0.465 in