CS 550x228 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 550x228 (México) · Doble T CS 550x228 (Argentina / LATAM) · UB 550 (UK / Australia)

The CS 550x228 steel profile weighs 228.4 kg/m (153.46 lb/ft), has a depth of 550 mm (21.65 in), flange width 550 mm (21.65 in). Cross-sectional area: 29,092 mm². Moment of inertia Ix = 165,283.194 cm⁴, Iy = 52,702.893 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)	16 mm	0.63 in
Flange thickness (tf)	19 mm	0.75 in
Weight	228.4 kg/m	153.46 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	29,092 mm²	45.093 in²
Moment of inertia (Ix)	165,283.19 cm⁴	3970.93 in⁴
Moment of inertia (Iy)	52,702.89 cm⁴	1266.19 in⁴
Elastic section modulus (Sx)	6,010.3 cm³	366.772 in³
Elastic section modulus (Sy)	1,916.47 cm³	116.951 in³
Plastic section modulus (Zx)	6,597.53 cm³	402.607 in³
Plastic section modulus (Zy)	2,906.52 cm³	177.367 in³
Radius of gyration (rx)	23.84 cm	9.384 in
Radius of gyration (ry)	13.46 cm	5.299 in