W 390 x 106,8 KS · Weight & Dimensions

KS, 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 390 x 106,8 (México) · Doble T 390 x 106,8 (Argentina / LATAM) · UB 390 (UK / Australia)

The W 390 x 106,8 steel profile weighs 106.8 kg/m (71.74 lb/ft), has a depth of 390 mm (15.35 in), flange width 300 mm (11.81 in). Cross-sectional area: 13,595.469 mm². Moment of inertia Ix = 38,674.103 cm⁴, Iy = 7,207.774 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	390 mm	15.35 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	10 mm	0.39 in
Flange thickness (tf)	16 mm	0.63 in
Fillet radius (r)	22 mm	0.87 in
Weight	106.8 kg/m	71.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,595.47 mm²	21.073 in²
Moment of inertia (Ix)	38,674.1 cm⁴	929.15 in⁴
Moment of inertia (Iy)	7,207.77 cm⁴	173.17 in⁴
Elastic section modulus (Sx)	1,983.29 cm³	121.028 in³
Elastic section modulus (Sy)	480.52 cm³	29.323 in³
Plastic section modulus (Zx)	2,187.94 cm³	133.517 in³
Plastic section modulus (Zy)	733.07 cm³	44.735 in³
Radius of gyration (rx)	16.87 cm	6.640 in
Radius of gyration (ry)	7.28 cm	2.867 in