CS 450x280 Usiminas · Weight & Dimensions

Usiminas, 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: CS 450x280 (México) · Doble T CS 450x280 (Argentina / LATAM) · UB 450 (UK / Australia)

The CS 450x280 steel profile weighs 280.3 kg/m (188.33 lb/ft), has a depth of 450 mm (17.72 in), flange width 450 mm (17.72 in). Cross-sectional area: 35,703 mm². Moment of inertia Ix = 133,543.584 cm⁴, Iy = 47,862.745 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)	19 mm	0.75 in
Flange thickness (tf)	31.5 mm	1.24 in
Weight	280.3 kg/m	188.33 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	35,703 mm²	55.340 in²
Moment of inertia (Ix)	133,543.58 cm⁴	3208.38 in⁴
Moment of inertia (Iy)	47,862.75 cm⁴	1149.90 in⁴
Elastic section modulus (Sx)	5,935.27 cm³	362.194 in³
Elastic section modulus (Sy)	2,127.23 cm³	129.812 in³
Plastic section modulus (Zx)	6,643.64 cm³	405.422 in³
Plastic section modulus (Zy)	3,224.3 cm³	196.760 in³
Radius of gyration (rx)	19.34 cm	7.614 in
Radius of gyration (ry)	11.58 cm	4.558 in