I 550x150x6x12 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 550x150x6x12 (México) · Doble T I 550x150x6x12 (Argentina / LATAM) · UB 550 (UK / Australia)

The I 550x150x6x12 steel profile weighs 53.1 kg/m (35.66 lb/ft), has a depth of 550 mm (21.65 in), flange width 150 mm (5.91 in). Cross-sectional area: 6,756 mm². Moment of inertia Ix = 33,330.859 cm⁴, Iy = 675.947 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)	6 mm	0.24 in
Flange thickness (tf)	12 mm	0.47 in
Weight	53.1 kg/m	35.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,756 mm²	10.472 in²
Moment of inertia (Ix)	33,330.86 cm⁴	800.77 in⁴
Moment of inertia (Iy)	675.95 cm⁴	16.24 in⁴
Elastic section modulus (Sx)	1,212.03 cm³	73.963 in³
Elastic section modulus (Sy)	90.13 cm³	5.500 in³
Plastic section modulus (Zx)	1,383.41 cm³	84.421 in³
Plastic section modulus (Zy)	139.73 cm³	8.527 in³
Radius of gyration (rx)	22.21 cm	8.745 in
Radius of gyration (ry)	3.16 cm	1.245 in