I 400x200x6x18 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 400x200x6x18 (México) · Doble T I 400x200x6x18 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x200x6x18 steel profile weighs 73.6 kg/m (49.48 lb/ft), has a depth of 400 mm (15.75 in), flange width 200 mm (7.87 in). Cross-sectional area: 9,384 mm². Moment of inertia Ix = 28,697.187 cm⁴, Iy = 2,400.655 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	200 mm	7.87 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	18 mm	0.71 in
Weight	73.6 kg/m	49.48 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,384 mm²	14.545 in²
Moment of inertia (Ix)	28,697.19 cm⁴	689.45 in⁴
Moment of inertia (Iy)	2,400.66 cm⁴	57.68 in⁴
Elastic section modulus (Sx)	1,434.86 cm³	87.561 in³
Elastic section modulus (Sy)	240.07 cm³	14.650 in³
Plastic section modulus (Zx)	1,573.94 cm³	96.048 in³
Plastic section modulus (Zy)	363.28 cm³	22.169 in³
Radius of gyration (rx)	17.49 cm	6.885 in
Radius of gyration (ry)	5.06 cm	1.991 in