CS 550x417 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 550x417 (México) · Doble T CS 550x417 (Argentina / LATAM) · UB 550 (UK / Australia)

The CS 550x417 steel profile weighs 417.1 kg/m (280.27 lb/ft), has a depth of 550 mm (21.65 in), flange width 550 mm (21.65 in). Cross-sectional area: 53,125 mm². Moment of inertia Ix = 293,675.13 cm⁴, Iy = 104,046.224 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)	25 mm	0.98 in
Flange thickness (tf)	37.5 mm	1.48 in
Weight	417.1 kg/m	280.27 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	53,125 mm²	82.344 in²
Moment of inertia (Ix)	293,675.13 cm⁴	7055.55 in⁴
Moment of inertia (Iy)	104,046.22 cm⁴	2499.71 in⁴
Elastic section modulus (Sx)	10,679.1 cm³	651.681 in³
Elastic section modulus (Sy)	3,783.5 cm³	230.884 in³
Plastic section modulus (Zx)	11,980.47 cm³	731.096 in³
Plastic section modulus (Zy)	5,746.09 cm³	350.650 in³
Radius of gyration (rx)	23.51 cm	9.257 in
Radius of gyration (ry)	13.99 cm	5.510 in