U 125 x 13,1 IS · Weight & Dimensions

IS, hot-rolled 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 125 x 13,1 (UK / Australia)

The U 125 x 13,1 steel profile weighs 13.1 kg/m (8.81 lb/ft), has a depth of 125 mm (4.92 in), flange width 65 mm (2.56 in). Cross-sectional area: 1,668.376 mm². Moment of inertia Ix = 427.804 cm⁴, Iy = 71.218 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	125 mm	4.92 in
Width (b)	65 mm	2.56 in
Web thickness (tw)	5.3 mm	0.21 in
Flange thickness (tf)	8.1 mm	0.32 in
Fillet radius (r)	9.5 mm	0.37 in
Weight	13.1 kg/m	8.81 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,668.38 mm²	2.586 in²
Moment of inertia (Ix)	427.8 cm⁴	10.28 in⁴
Moment of inertia (Iy)	71.22 cm⁴	1.71 in⁴
Elastic section modulus (Sx)	68.45 cm³	4.177 in³
Elastic section modulus (Sy)	16.41 cm³	1.001 in³
Plastic section modulus (Zx)	79.26 cm³	4.837 in³
Plastic section modulus (Zy)	29.45 cm³	1.797 in³
Radius of gyration (rx)	5.06 cm	1.994 in
Radius of gyration (ry)	2.07 cm	0.813 in