Steel Section Catalog

U 300x90x4.25

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 300x90x4.25 steel profile weighs 23.0 kg/m (15.47 lb/ft), has a depth of 300 mm (11.81 in), flange width 90 mm (3.54 in). Cross-sectional area: 1,985.8 mm². Moment of inertia Ix = 2,510.12 cm⁴, Iy = 129.66 cm⁴.

h=300b=90t=4.25
Cross-section (not to scale)
Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

PropertyMetricImperial
Depth (h)300 mm11.81 in
Width (b)90 mm3.54 in
Thickness (t)4.3 mm0.17 in
Weight23.0 kg/m15.47 lb/ft

Section Properties

PropertyMetricImperial
Area (A)1,985.8 mm²3.078 in²
Moment of inertia (Ix)2,510.12 cm⁴60.31 in⁴
Moment of inertia (Iy)129.66 cm⁴3.12 in⁴
Elastic section modulus (Sx)167.34 cm³10.212 in³
Elastic section modulus (Sy)17.46 cm³1.065 in³
Plastic section modulus (Zx)192.44 cm³11.743 in³
Plastic section modulus (Zy)20.95 cm³1.278 in³
Radius of gyration (rx)11.24 cm4.425 in
Radius of gyration (ry)2.56 cm1.008 in
U 300x90x3.05U 300x90x6.3

Beam Calculator— U 300x90x4.25

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mfixed @ 0mfixed @ 6m→kN/m

Results — U 300x90x4.25

Mmax

15.0 kN·m

Vmax

15.0 kN

δmax

3.36 mm

L/1785

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