U 209x70x4.5 Sadef · Weight & Dimensions

Sadef, 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 209x70x4.5 (UK / Australia)

The U 209x70x4.5 steel profile weighs 11.6 kg/m (7.78 lb/ft), has a depth of 209 mm (8.23 in), flange width 70 mm (2.76 in). Cross-sectional area: 1,474.874 mm². Moment of inertia Ix = 898.046 cm⁴, Iy = 64.193 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	209 mm	8.23 in
Width (b)	70 mm	2.76 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	12 mm	0.47 in
Weight	11.6 kg/m	7.78 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,474.87 mm²	2.286 in²
Moment of inertia (Ix)	898.05 cm⁴	21.58 in⁴
Moment of inertia (Iy)	64.19 cm⁴	1.54 in⁴
Elastic section modulus (Sx)	85.94 cm³	5.244 in³
Elastic section modulus (Sy)	11.96 cm³	0.730 in³
Plastic section modulus (Zx)	109.39 cm³	6.676 in³
Plastic section modulus (Zy)	15.9 cm³	0.970 in³
Radius of gyration (rx)	7.8 cm	3.072 in
Radius of gyration (ry)	2.09 cm	0.821 in