W 525 x 65,7 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 525 x 65,7 (México) · Doble T 525 x 65,7 (Argentina / LATAM) · UB 524.7 (UK / Australia)

The W 525 x 65,7 steel profile weighs 65.7 kg/m (44.15 lb/ft), has a depth of 524.7 mm (20.66 in), flange width 165.1 mm (6.50 in). Cross-sectional area: 8,369.643 mm². Moment of inertia Ix = 35,028.414 cm⁴, Iy = 858.819 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	524.7 mm	20.66 in
Width (b)	165.1 mm	6.50 in
Web thickness (tw)	8.9 mm	0.35 in
Flange thickness (tf)	11.4 mm	0.45 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	65.7 kg/m	44.15 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,369.64 mm²	12.973 in²
Moment of inertia (Ix)	35,028.41 cm⁴	841.56 in⁴
Moment of inertia (Iy)	858.82 cm⁴	20.63 in⁴
Elastic section modulus (Sx)	1,335.18 cm³	81.478 in³
Elastic section modulus (Sy)	104.04 cm³	6.349 in³
Plastic section modulus (Zx)	1,560.94 cm³	95.255 in³
Plastic section modulus (Zy)	166.32 cm³	10.149 in³
Radius of gyration (rx)	20.46 cm	8.054 in
Radius of gyration (ry)	3.2 cm	1.261 in