CS 650x409 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 650x409 (México) · Doble T CS 650x409 (Argentina / LATAM) · UB 650 (UK / Australia)

The CS 650x409 steel profile weighs 409.0 kg/m (274.84 lb/ft), has a depth of 650 mm (25.59 in), flange width 650 mm (25.59 in). Cross-sectional area: 52,103 mm². Moment of inertia Ix = 423,991.051 cm⁴, Iy = 144,211.677 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	650 mm	25.59 in
Width (b)	650 mm	25.59 in
Web thickness (tw)	19 mm	0.75 in
Flange thickness (tf)	31.5 mm	1.24 in
Weight	409.0 kg/m	274.84 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	52,103 mm²	80.760 in²
Moment of inertia (Ix)	423,991.05 cm⁴	10186.38 in⁴
Moment of inertia (Iy)	144,211.68 cm⁴	3464.69 in⁴
Elastic section modulus (Sx)	13,045.88 cm³	796.112 in³
Elastic section modulus (Sy)	4,437.28 cm³	270.781 in³
Plastic section modulus (Zx)	14,300.49 cm³	872.673 in³
Plastic section modulus (Zy)	6,707.35 cm³	409.309 in³
Radius of gyration (rx)	28.53 cm	11.231 in
Radius of gyration (ry)	16.64 cm	6.550 in