I 550x550x60x60 CISC · Weight & Dimensions

CISC, 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: I 550x550x60x60 (México) · Doble T I 550x550x60x60 (Argentina / LATAM) · UB 550 (UK / Australia)

The I 550x550x60x60 steel profile weighs 720.6 kg/m (484.26 lb/ft), has a depth of 550 mm (21.65 in), flange width 550 mm (21.65 in). Cross-sectional area: 91,800 mm². Moment of inertia Ix = 437,898.5 cm⁴, Iy = 167,149 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)	60 mm	2.36 in
Flange thickness (tf)	60 mm	2.36 in
Weight	720.6 kg/m	484.26 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	91,800 mm²	142.290 in²
Moment of inertia (Ix)	437,898.5 cm⁴	10520.51 in⁴
Moment of inertia (Iy)	167,149 cm⁴	4015.75 in⁴
Elastic section modulus (Sx)	15,923.58 cm³	971.721 in³
Elastic section modulus (Sy)	6,078.15 cm³	370.913 in³
Plastic section modulus (Zx)	18,943.5 cm³	1156.008 in³
Plastic section modulus (Zy)	9,462 cm³	577.409 in³
Radius of gyration (rx)	21.84 cm	8.599 in
Radius of gyration (ry)	13.49 cm	5.312 in