I 550x150x5x8 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 550x150x5x8 (México) · Doble T I 550x150x5x8 (Argentina / LATAM) · UB 550 (UK / Australia)

The I 550x150x5x8 steel profile weighs 39.8 kg/m (26.75 lb/ft), has a depth of 550 mm (21.65 in), flange width 150 mm (5.91 in). Cross-sectional area: 5,070 mm². Moment of inertia Ix = 23,971.841 cm⁴, Iy = 450.556 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	550 mm	21.65 in
Width (b)	150 mm	5.91 in
Web thickness (tw)	5 mm	0.20 in
Flange thickness (tf)	8 mm	0.31 in
Weight	39.8 kg/m	26.75 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,070 mm²	7.858 in²
Moment of inertia (Ix)	23,971.84 cm⁴	575.92 in⁴
Moment of inertia (Iy)	450.56 cm⁴	10.82 in⁴
Elastic section modulus (Sx)	871.7 cm³	53.195 in³
Elastic section modulus (Sy)	60.07 cm³	3.666 in³
Plastic section modulus (Zx)	1,006.85 cm³	61.442 in³
Plastic section modulus (Zy)	93.34 cm³	5.696 in³
Radius of gyration (rx)	21.74 cm	8.561 in
Radius of gyration (ry)	2.98 cm	1.174 in