W 478 x 263,3 Arval · Weight & Dimensions

Arval, 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 478 x 263,3 (México) · Doble T 478 x 263,3 (Argentina / LATAM) · UB 478 (UK / Australia)

The W 478 x 263,3 steel profile weighs 263.3 kg/m (176.93 lb/ft), has a depth of 478 mm (18.82 in), flange width 307 mm (12.09 in). Cross-sectional area: 33,543.779 mm². Moment of inertia Ix = 131,484.342 cm⁴, Iy = 19,339.049 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	478 mm	18.82 in
Width (b)	307 mm	12.09 in
Web thickness (tw)	21 mm	0.83 in
Flange thickness (tf)	40 mm	1.57 in
Fillet radius (r)	27 mm	1.06 in
Weight	263.3 kg/m	176.93 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	33,543.78 mm²	51.993 in²
Moment of inertia (Ix)	131,484.34 cm⁴	3158.91 in⁴
Moment of inertia (Iy)	19,339.05 cm⁴	464.62 in⁴
Elastic section modulus (Sx)	5,501.44 cm³	335.720 in³
Elastic section modulus (Sy)	1,259.87 cm³	76.882 in³
Plastic section modulus (Zx)	6,331.02 cm³	386.344 in³
Plastic section modulus (Zy)	1,939.2 cm³	118.338 in³
Radius of gyration (rx)	19.8 cm	7.795 in
Radius of gyration (ry)	7.59 cm	2.989 in