Steel Section Catalog

U 250x70x4.25

BR — 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.

The U 250x70x4.25 steel profile weighs 19.0 kg/m (12.78 lb/ft), has a depth of 250 mm (9.84 in), flange width 70 mm (2.76 in). Cross-sectional area: 1,603.3 mm². Moment of inertia Ix = 1,369.53 cm⁴, Iy = 59.64 cm⁴.

h=250b=70t=4.25
Cross-section (not to scale)
Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

PropertyMetricImperial
Depth (h)250 mm9.84 in
Width (b)70 mm2.76 in
Thickness (t)4.3 mm0.17 in
Weight19.0 kg/m12.78 lb/ft

Section Properties

PropertyMetricImperial
Area (A)1,603.3 mm²2.485 in²
Moment of inertia (Ix)1,369.53 cm⁴32.90 in⁴
Moment of inertia (Iy)59.64 cm⁴1.43 in⁴
Elastic section modulus (Sx)109.56 cm³6.686 in³
Elastic section modulus (Sy)10.19 cm³0.622 in³
Plastic section modulus (Zx)126 cm³7.689 in³
Plastic section modulus (Zy)12.22 cm³0.746 in³
Radius of gyration (rx)9.24 cm3.638 in
Radius of gyration (ry)1.93 cm0.760 in
U 250x70x3.05U 250x70x6.3

Beam Calculator— U 250x70x4.25

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mfixed @ 0mfixed @ 6m→kN/m

Results — U 250x70x4.25

Mmax

15.0 kN·m

Vmax

15.0 kN

δmax

6.16 mm

L/974

R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard: