I 550x490x15.5x30 IAS · Weight & Dimensions

IAS, 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.

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Also known as: I 550x490x15.5x30 (México) · Doble T I 550x490x15.5x30 (Argentina / LATAM) · UB 550 (UK / Australia)

The I 550x490x15.5x30 steel profile weighs 290.4 kg/m (195.16 lb/ft), has a depth of 550 mm (21.65 in), flange width 490 mm (19.29 in). Cross-sectional area: 36,995 mm². Moment of inertia Ix = 214,160.829 cm⁴, Iy = 58,839.706 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	550 mm	21.65 in
Width (b)	490 mm	19.29 in
Web thickness (tw)	15.5 mm	0.61 in
Flange thickness (tf)	30 mm	1.18 in
Weight	290.4 kg/m	195.16 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	36,995 mm²	57.342 in²
Moment of inertia (Ix)	214,160.83 cm⁴	5145.21 in⁴
Moment of inertia (Iy)	58,839.71 cm⁴	1413.62 in⁴
Elastic section modulus (Sx)	7,787.67 cm³	475.235 in³
Elastic section modulus (Sy)	2,401.62 cm³	146.556 in³
Plastic section modulus (Zx)	8,574.39 cm³	523.243 in³
Plastic section modulus (Zy)	3,630.93 cm³	221.574 in³
Radius of gyration (rx)	24.06 cm	9.472 in
Radius of gyration (ry)	12.61 cm	4.965 in