CS 400x185 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 400x185 (México) · Doble T CS 400x185 (Argentina / LATAM) · UB 400 (UK / Australia)

The CS 400x185 steel profile weighs 185.3 kg/m (124.49 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 23,603.2 mm². Moment of inertia Ix = 69,926.829 cm⁴, Iy = 23,905.457 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)	16 mm	0.63 in
Flange thickness (tf)	22.4 mm	0.88 in
Weight	185.3 kg/m	124.49 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	23,603.2 mm²	36.585 in²
Moment of inertia (Ix)	69,926.83 cm⁴	1679.99 in⁴
Moment of inertia (Iy)	23,905.46 cm⁴	574.33 in⁴
Elastic section modulus (Sx)	3,496.34 cm³	213.361 in³
Elastic section modulus (Sy)	1,195.27 cm³	72.940 in³
Plastic section modulus (Zx)	3,887.96 cm³	237.259 in³
Plastic section modulus (Zy)	1,814.73 cm³	110.742 in³
Radius of gyration (rx)	17.21 cm	6.776 in
Radius of gyration (ry)	10.06 cm	3.962 in