I 450x200x8x18 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 450x200x8x18 (México) · Doble T I 450x200x8x18 (Argentina / LATAM) · UB 450 (UK / Australia)

The I 450x200x8x18 steel profile weighs 82.5 kg/m (55.44 lb/ft), has a depth of 450 mm (17.72 in), flange width 200 mm (7.87 in). Cross-sectional area: 10,512 mm². Moment of inertia Ix = 38,342.29 cm⁴, Iy = 2,401.766 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	450 mm	17.72 in
Width (b)	200 mm	7.87 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	18 mm	0.71 in
Weight	82.5 kg/m	55.44 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,512 mm²	16.294 in²
Moment of inertia (Ix)	38,342.29 cm⁴	921.17 in⁴
Moment of inertia (Iy)	2,401.77 cm⁴	57.70 in⁴
Elastic section modulus (Sx)	1,704.1 cm³	103.991 in³
Elastic section modulus (Sy)	240.18 cm³	14.657 in³
Plastic section modulus (Zx)	1,897.99 cm³	115.823 in³
Plastic section modulus (Zy)	366.62 cm³	22.373 in³
Radius of gyration (rx)	19.1 cm	7.519 in
Radius of gyration (ry)	4.78 cm	1.882 in