CS 400x146 Usiminas · Weight & Dimensions

Usiminas, welded sections · Wide Flange (I-beam)

Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.

Also known as: CS 400x146 (México) · Doble T CS 400x146 (Argentina / LATAM) · UB 400 (UK / Australia)

The CS 400x146 steel profile weighs 146.3 kg/m (98.33 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 18,639 mm². Moment of inertia Ix = 58,962.409 cm⁴, Iy = 20,269.253 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	400 mm	15.75 in
Web thickness (tw)	9.5 mm	0.37 in
Flange thickness (tf)	19 mm	0.75 in
Weight	146.3 kg/m	98.33 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	18,639 mm²	28.890 in²
Moment of inertia (Ix)	58,962.41 cm⁴	1416.57 in⁴
Moment of inertia (Iy)	20,269.25 cm⁴	486.97 in⁴
Elastic section modulus (Sx)	2,948.12 cm³	179.906 in³
Elastic section modulus (Sy)	1,013.46 cm³	61.846 in³
Plastic section modulus (Zx)	3,206.83 cm³	195.694 in³
Plastic section modulus (Zy)	1,528.17 cm³	93.255 in³
Radius of gyration (rx)	17.79 cm	7.002 in
Radius of gyration (ry)	10.43 cm	4.106 in