U 170x70x3 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 170x70x3 (UK / Australia)

The U 170x70x3 steel profile weighs 7.0 kg/m (4.74 lb/ft), has a depth of 170 mm (6.69 in), flange width 70 mm (2.76 in). Cross-sectional area: 897.815 mm². Moment of inertia Ix = 392.921 cm⁴, Iy = 42.21 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	170 mm	6.69 in
Width (b)	70 mm	2.76 in
Thickness (t)	3 mm	0.12 in
Fillet radius (r)	4 mm	0.16 in
Weight	7.0 kg/m	4.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	897.82 mm²	1.392 in²
Moment of inertia (Ix)	392.92 cm⁴	9.44 in⁴
Moment of inertia (Iy)	42.21 cm⁴	1.01 in⁴
Elastic section modulus (Sx)	46.23 cm³	2.821 in³
Elastic section modulus (Sy)	7.99 cm³	0.488 in³
Plastic section modulus (Zx)	55.24 cm³	3.371 in³
Plastic section modulus (Zy)	10.49 cm³	0.640 in³
Radius of gyration (rx)	6.62 cm	2.604 in
Radius of gyration (ry)	2.17 cm	0.854 in