CS 550x495 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 550x495 (México) · Doble T CS 550x495 (Argentina / LATAM) · UB 550 (UK / Australia)

The CS 550x495 steel profile weighs 494.2 kg/m (332.08 lb/ft), has a depth of 550 mm (21.65 in), flange width 550 mm (21.65 in). Cross-sectional area: 62,953 mm². Moment of inertia Ix = 336,469.834 cm⁴, Iy = 122,128.668 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	550 mm	21.65 in
Width (b)	550 mm	21.65 in
Web thickness (tw)	31.5 mm	1.24 in
Flange thickness (tf)	44 mm	1.73 in
Weight	494.2 kg/m	332.08 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	62,953 mm²	97.577 in²
Moment of inertia (Ix)	336,469.83 cm⁴	8083.69 in⁴
Moment of inertia (Iy)	122,128.67 cm⁴	2934.14 in⁴
Elastic section modulus (Sx)	12,235.27 cm³	746.645 in³
Elastic section modulus (Sy)	4,441.04 cm³	271.010 in³
Plastic section modulus (Zx)	13,926.07 cm³	849.825 in³
Plastic section modulus (Zy)	6,769.6 cm³	413.108 in³
Radius of gyration (rx)	23.12 cm	9.102 in
Radius of gyration (ry)	13.93 cm	5.484 in