U 180 x 21,0 SAISC · Weight & Dimensions

SAISC, 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 180 x 21,0 (UK / Australia)

The U 180 x 21,0 steel profile weighs 21.0 kg/m (14.14 lb/ft), has a depth of 180 mm (7.09 in), flange width 70 mm (2.76 in). Cross-sectional area: 2,684.394 mm². Moment of inertia Ix = 1,353.356 cm⁴, Iy = 127.218 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	70 mm	2.76 in
Web thickness (tw)	7 mm	0.28 in
Flange thickness (tf)	10.9 mm	0.43 in
Fillet radius (r)	10.9 mm	0.43 in
Weight	21.0 kg/m	14.14 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,684.39 mm²	4.161 in²
Moment of inertia (Ix)	1,353.36 cm⁴	32.51 in⁴
Moment of inertia (Iy)	127.22 cm⁴	3.06 in⁴
Elastic section modulus (Sx)	150.37 cm³	9.176 in³
Elastic section modulus (Sy)	26.24 cm³	1.601 in³
Plastic section modulus (Zx)	176.73 cm³	10.785 in³
Plastic section modulus (Zy)	47.61 cm³	2.905 in³
Radius of gyration (rx)	7.1 cm	2.795 in
Radius of gyration (ry)	2.18 cm	0.857 in