W 577 x 273,2 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 577 x 273,2 (México) · Doble T 577 x 273,2 (Argentina / LATAM) · UB 577.1 (UK / Australia)

The W 577 x 273,2 steel profile weighs 273.2 kg/m (183.58 lb/ft), has a depth of 577.1 mm (22.72 in), flange width 320.2 mm (12.61 in). Cross-sectional area: 34,807.583 mm². Moment of inertia Ix = 198,578.045 cm⁴, Iy = 20,614.99 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	577.1 mm	22.72 in
Width (b)	320.2 mm	12.61 in
Web thickness (tw)	21.1 mm	0.83 in
Flange thickness (tf)	37.6 mm	1.48 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	273.2 kg/m	183.58 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	34,807.58 mm²	53.952 in²
Moment of inertia (Ix)	198,578.05 cm⁴	4770.84 in⁴
Moment of inertia (Iy)	20,614.99 cm⁴	495.28 in⁴
Elastic section modulus (Sx)	6,881.93 cm³	419.963 in³
Elastic section modulus (Sy)	1,287.63 cm³	78.576 in³
Plastic section modulus (Zx)	7,858.46 cm³	479.555 in³
Plastic section modulus (Zy)	1,985.24 cm³	121.147 in³
Radius of gyration (rx)	23.89 cm	9.404 in
Radius of gyration (ry)	7.7 cm	3.030 in