W 304 x 40,5 SAISC · Weight & Dimensions

SAISC, 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 304 x 40,5 (México) · Doble T 304 x 40,5 (Argentina / LATAM) · UB 303.8 (UK / Australia)

The W 304 x 40,5 steel profile weighs 40.5 kg/m (27.22 lb/ft), has a depth of 303.8 mm (11.96 in), flange width 165.1 mm (6.50 in). Cross-sectional area: 5,164.774 mm². Moment of inertia Ix = 8,550.907 cm⁴, Iy = 765.778 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	303.8 mm	11.96 in
Width (b)	165.1 mm	6.50 in
Web thickness (tw)	6.1 mm	0.24 in
Flange thickness (tf)	10.2 mm	0.40 in
Fillet radius (r)	8.9 mm	0.35 in
Weight	40.5 kg/m	27.22 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,164.77 mm²	8.005 in²
Moment of inertia (Ix)	8,550.91 cm⁴	205.44 in⁴
Moment of inertia (Iy)	765.78 cm⁴	18.40 in⁴
Elastic section modulus (Sx)	562.93 cm³	34.352 in³
Elastic section modulus (Sy)	92.77 cm³	5.661 in³
Plastic section modulus (Zx)	626.41 cm³	38.226 in³
Plastic section modulus (Zy)	141.99 cm³	8.665 in³
Radius of gyration (rx)	12.87 cm	5.066 in
Radius of gyration (ry)	3.85 cm	1.516 in