I 400x250x6x20 Cintac · Weight & Dimensions

Cintac, welded 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: I 400x250x6x20 (México) · Doble T I 400x250x6x20 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x250x6x20 steel profile weighs 95.5 kg/m (64.15 lb/ft), has a depth of 400 mm (15.75 in), flange width 250 mm (9.84 in). Cross-sectional area: 12,160 mm². Moment of inertia Ix = 38,466.133 cm⁴, Iy = 5,208.981 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	250 mm	9.84 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	20 mm	0.79 in
Weight	95.5 kg/m	64.15 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	12,160 mm²	18.848 in²
Moment of inertia (Ix)	38,466.13 cm⁴	924.15 in⁴
Moment of inertia (Iy)	5,208.98 cm⁴	125.15 in⁴
Elastic section modulus (Sx)	1,923.31 cm³	117.368 in³
Elastic section modulus (Sy)	416.72 cm³	25.430 in³
Plastic section modulus (Zx)	2,094.4 cm³	127.809 in³
Plastic section modulus (Zy)	628.24 cm³	38.338 in³
Radius of gyration (rx)	17.79 cm	7.002 in
Radius of gyration (ry)	6.54 cm	2.577 in