W 255 x 65,2 GOST · Weight & Dimensions

GOST, 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 255 x 65,2 (México) · Doble T 255 x 65,2 (Argentina / LATAM) · UB 255 (UK / Australia)

The W 255 x 65,2 steel profile weighs 65.2 kg/m (43.83 lb/ft), has a depth of 255 mm (10.04 in), flange width 260 mm (10.24 in). Cross-sectional area: 8,307.752 mm². Moment of inertia Ix = 10,316.383 cm⁴, Iy = 3,517.644 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	255 mm	10.04 in
Width (b)	260 mm	10.24 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	12 mm	0.47 in
Fillet radius (r)	16 mm	0.63 in
Weight	65.2 kg/m	43.83 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,307.75 mm²	12.877 in²
Moment of inertia (Ix)	10,316.38 cm⁴	247.85 in⁴
Moment of inertia (Iy)	3,517.64 cm⁴	84.51 in⁴
Elastic section modulus (Sx)	809.13 cm³	49.376 in³
Elastic section modulus (Sy)	270.59 cm³	16.512 in³
Plastic section modulus (Zx)	889.48 cm³	54.280 in³
Plastic section modulus (Zy)	410.96 cm³	25.078 in³
Radius of gyration (rx)	11.14 cm	4.387 in
Radius of gyration (ry)	6.51 cm	2.562 in