I 450x250x8x18 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 450x250x8x18 (México) · Doble T I 450x250x8x18 (Argentina / LATAM) · UB 450 (UK / Australia)

The I 450x250x8x18 steel profile weighs 96.6 kg/m (64.94 lb/ft), has a depth of 450 mm (17.72 in), flange width 250 mm (9.84 in). Cross-sectional area: 12,312 mm². Moment of inertia Ix = 46,745.23 cm⁴, Iy = 4,689.266 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	450 mm	17.72 in
Width (b)	250 mm	9.84 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	18 mm	0.71 in
Weight	96.6 kg/m	64.94 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	12,312 mm²	19.084 in²
Moment of inertia (Ix)	46,745.23 cm⁴	1123.05 in⁴
Moment of inertia (Iy)	4,689.27 cm⁴	112.66 in⁴
Elastic section modulus (Sx)	2,077.57 cm³	126.781 in³
Elastic section modulus (Sy)	375.14 cm³	22.893 in³
Plastic section modulus (Zx)	2,286.79 cm³	139.549 in³
Plastic section modulus (Zy)	569.12 cm³	34.730 in³
Radius of gyration (rx)	19.49 cm	7.671 in
Radius of gyration (ry)	6.17 cm	2.430 in