U 175 x 21,7 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 175 x 21,7 (UK / Australia)

The U 175 x 21,7 steel profile weighs 21.7 kg/m (14.56 lb/ft), has a depth of 175 mm (6.89 in), flange width 77 mm (3.03 in). Cross-sectional area: 2,777.62 mm². Moment of inertia Ix = 1,325.446 cm⁴, Iy = 159.625 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	175 mm	6.89 in
Width (b)	77 mm	3.03 in
Web thickness (tw)	7.5 mm	0.30 in
Flange thickness (tf)	10.2 mm	0.40 in
Fillet radius (r)	10.5 mm	0.41 in
Weight	21.7 kg/m	14.56 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,777.62 mm²	4.305 in²
Moment of inertia (Ix)	1,325.45 cm⁴	31.84 in⁴
Moment of inertia (Iy)	159.63 cm⁴	3.84 in⁴
Elastic section modulus (Sx)	151.48 cm³	9.244 in³
Elastic section modulus (Sy)	29.84 cm³	1.821 in³
Plastic section modulus (Zx)	177.8 cm³	10.850 in³
Plastic section modulus (Zy)	54.13 cm³	3.303 in³
Radius of gyration (rx)	6.91 cm	2.720 in
Radius of gyration (ry)	2.4 cm	0.944 in