U 127x50x4.18 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Brazil) · 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 127x50x4.18 (UK / Australia)

The U 127x50x4.18 steel profile weighs 7.0 kg/m (4.70 lb/ft), has a depth of 127 mm (5.00 in), flange width 50 mm (1.97 in). Cross-sectional area: 891.384 mm². Moment of inertia Ix = 206.853 cm⁴, Iy = 20.339 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.18 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	127 mm	5.00 in
Width (b)	50 mm	1.97 in
Thickness (t)	4.2 mm	0.16 in
Fillet radius (r)	4.2 mm	0.16 in
Weight	7.0 kg/m	4.70 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	891.38 mm²	1.382 in²
Moment of inertia (Ix)	206.85 cm⁴	4.97 in⁴
Moment of inertia (Iy)	20.34 cm⁴	0.49 in⁴
Elastic section modulus (Sx)	32.58 cm³	1.988 in³
Elastic section modulus (Sy)	5.48 cm³	0.334 in³
Plastic section modulus (Zx)	40.36 cm³	2.463 in³
Plastic section modulus (Zy)	7.23 cm³	0.441 in³
Radius of gyration (rx)	4.82 cm	1.897 in
Radius of gyration (ry)	1.51 cm	0.595 in