I 550x200x5x8 Cintac · Weight & Dimensions

Cintac, 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 550x200x5x8 (México) · Doble T I 550x200x5x8 (Argentina / LATAM) · UB 550 (UK / Australia)

The I 550x200x5x8 steel profile weighs 46.1 kg/m (30.97 lb/ft), has a depth of 550 mm (21.65 in), flange width 200 mm (7.87 in). Cross-sectional area: 5,870 mm². Moment of inertia Ix = 29,847.548 cm⁴, Iy = 1,067.223 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	550 mm	21.65 in
Width (b)	200 mm	7.87 in
Web thickness (tw)	5 mm	0.20 in
Flange thickness (tf)	8 mm	0.31 in
Weight	46.1 kg/m	30.97 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,870 mm²	9.098 in²
Moment of inertia (Ix)	29,847.55 cm⁴	717.09 in⁴
Moment of inertia (Iy)	1,067.22 cm⁴	25.64 in⁴
Elastic section modulus (Sx)	1,085.37 cm³	66.233 in³
Elastic section modulus (Sy)	106.72 cm³	6.513 in³
Plastic section modulus (Zx)	1,223.65 cm³	74.672 in³
Plastic section modulus (Zy)	163.34 cm³	9.968 in³
Radius of gyration (rx)	22.55 cm	8.878 in
Radius of gyration (ry)	4.26 cm	1.679 in