W 549 x 138,2 British Steel · Weight & Dimensions

British Steel, hot-rolled 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: IPR 549 x 138,2 (México) · Doble T 549 x 138,2 (Argentina / LATAM) · UB 549.1 (UK / Australia)

The W 549 x 138,2 steel profile weighs 138.2 kg/m (92.84 lb/ft), has a depth of 549.1 mm (21.62 in), flange width 213.9 mm (8.42 in). Cross-sectional area: 17,612.463 mm². Moment of inertia Ix = 86,087.856 cm⁴, Iy = 3,864.202 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	549.1 mm	21.62 in
Width (b)	213.9 mm	8.42 in
Web thickness (tw)	14.7 mm	0.58 in
Flange thickness (tf)	23.6 mm	0.93 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	138.2 kg/m	92.84 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	17,612.46 mm²	27.299 in²
Moment of inertia (Ix)	86,087.86 cm⁴	2068.26 in⁴
Moment of inertia (Iy)	3,864.2 cm⁴	92.84 in⁴
Elastic section modulus (Sx)	3,135.6 cm³	191.347 in³
Elastic section modulus (Sy)	361.31 cm³	22.049 in³
Plastic section modulus (Zx)	3,612.84 cm³	220.470 in³
Plastic section modulus (Zy)	568.41 cm³	34.687 in³
Radius of gyration (rx)	22.11 cm	8.704 in
Radius of gyration (ry)	4.68 cm	1.844 in