I 450x450x12x20 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 450x450x12x20 (México) · Doble T I 450x450x12x20 (Argentina / LATAM) · UB 450 (UK / Australia)

The I 450x450x12x20 steel profile weighs 179.9 kg/m (120.91 lb/ft), has a depth of 450 mm (17.72 in), flange width 450 mm (17.72 in). Cross-sectional area: 22,920 mm². Moment of inertia Ix = 90,157.1 cm⁴, Iy = 30,380.904 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	450 mm	17.72 in
Width (b)	450 mm	17.72 in
Web thickness (tw)	12 mm	0.47 in
Flange thickness (tf)	20 mm	0.79 in
Weight	179.9 kg/m	120.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	22,920 mm²	35.526 in²
Moment of inertia (Ix)	90,157.1 cm⁴	2166.02 in⁴
Moment of inertia (Iy)	30,380.9 cm⁴	729.90 in⁴
Elastic section modulus (Sx)	4,006.98 cm³	244.522 in³
Elastic section modulus (Sy)	1,350.26 cm³	82.398 in³
Plastic section modulus (Zx)	4,374.3 cm³	266.937 in³
Plastic section modulus (Zy)	2,039.76 cm³	124.474 in³
Radius of gyration (rx)	19.83 cm	7.808 in
Radius of gyration (ry)	11.51 cm	4.533 in