W 400 x 165,6 GOST · Weight & Dimensions

GOST, 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 400 x 165,6 (México) · Doble T 400 x 165,6 (Argentina / LATAM) · UB 400 (UK / Australia)

The W 400 x 165,6 steel profile weighs 165.6 kg/m (111.28 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 21,095.469 mm². Moment of inertia Ix = 64,142.064 cm⁴, Iy = 21,346.044 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	400 mm	15.75 in
Web thickness (tw)	13 mm	0.51 in
Flange thickness (tf)	20 mm	0.79 in
Fillet radius (r)	22 mm	0.87 in
Weight	165.6 kg/m	111.28 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	21,095.47 mm²	32.698 in²
Moment of inertia (Ix)	64,142.06 cm⁴	1541.01 in⁴
Moment of inertia (Iy)	21,346.04 cm⁴	512.84 in⁴
Elastic section modulus (Sx)	3,207.1 cm³	195.710 in³
Elastic section modulus (Sy)	1,067.3 cm³	65.131 in³
Plastic section modulus (Zx)	3,533.94 cm³	215.655 in³
Plastic section modulus (Zy)	1,619.95 cm³	98.856 in³
Radius of gyration (rx)	17.44 cm	6.865 in
Radius of gyration (ry)	10.06 cm	3.960 in