W 351 x 131,9 CISC · Weight & Dimensions

CISC, 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 351 x 131,9 (México) · Doble T 351 x 131,9 (Argentina / LATAM) · UB 351 (UK / Australia)

The W 351 x 131,9 steel profile weighs 131.9 kg/m (88.62 lb/ft), has a depth of 351 mm (13.82 in), flange width 373 mm (14.69 in). Cross-sectional area: 16,819.622 mm². Moment of inertia Ix = 37,477.718 cm⁴, Iy = 13,505.402 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	351 mm	13.82 in
Width (b)	373 mm	14.69 in
Web thickness (tw)	15.6 mm	0.61 in
Flange thickness (tf)	15.6 mm	0.61 in
Fillet radius (r)	15 mm	0.59 in
Weight	131.9 kg/m	88.62 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,819.62 mm²	26.070 in²
Moment of inertia (Ix)	37,477.72 cm⁴	900.40 in⁴
Moment of inertia (Iy)	13,505.4 cm⁴	324.47 in⁴
Elastic section modulus (Sx)	2,135.48 cm³	130.316 in³
Elastic section modulus (Sy)	724.15 cm³	44.191 in³
Plastic section modulus (Zx)	2,380.72 cm³	145.281 in³
Plastic section modulus (Zy)	1,106.82 cm³	67.542 in³
Radius of gyration (rx)	14.93 cm	5.877 in
Radius of gyration (ry)	8.96 cm	3.528 in