W 648 x 399,2 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 648 x 399,2 (México) · Doble T 648 x 399,2 (Argentina / LATAM) · UB 648 (UK / Australia)

The W 648 x 399,2 steel profile weighs 399.2 kg/m (268.24 lb/ft), has a depth of 648 mm (25.51 in), flange width 315 mm (12.40 in). Cross-sectional area: 50,845.779 mm². Moment of inertia Ix = 344,641.715 cm⁴, Iy = 28,281.07 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	648 mm	25.51 in
Width (b)	315 mm	12.40 in
Web thickness (tw)	30 mm	1.18 in
Flange thickness (tf)	54 mm	2.13 in
Fillet radius (r)	27 mm	1.06 in
Weight	399.2 kg/m	268.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	50,845.78 mm²	78.811 in²
Moment of inertia (Ix)	344,641.71 cm⁴	8280.02 in⁴
Moment of inertia (Iy)	28,281.07 cm⁴	679.45 in⁴
Elastic section modulus (Sx)	10,637.09 cm³	649.118 in³
Elastic section modulus (Sy)	1,795.62 cm³	109.576 in³
Plastic section modulus (Zx)	12,456.13 cm³	760.123 in³
Plastic section modulus (Zy)	2,813.74 cm³	171.705 in³
Radius of gyration (rx)	26.03 cm	10.250 in
Radius of gyration (ry)	7.46 cm	2.936 in