CS 450x331 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 450x331 (México) · Doble T CS 450x331 (Argentina / LATAM) · UB 450 (UK / Australia)

The CS 450x331 steel profile weighs 330.9 kg/m (222.35 lb/ft), has a depth of 450 mm (17.72 in), flange width 450 mm (17.72 in). Cross-sectional area: 42,150 mm². Moment of inertia Ix = 153,808.594 cm⁴, Iy = 56,988.248 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)	22.4 mm	0.88 in
Flange thickness (tf)	37.5 mm	1.48 in
Weight	330.9 kg/m	222.35 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	42,150 mm²	65.332 in²
Moment of inertia (Ix)	153,808.59 cm⁴	3695.25 in⁴
Moment of inertia (Iy)	56,988.25 cm⁴	1369.14 in⁴
Elastic section modulus (Sx)	6,835.94 cm³	417.156 in³
Elastic section modulus (Sy)	2,532.81 cm³	154.562 in³
Plastic section modulus (Zx)	7,748.44 cm³	472.841 in³
Plastic section modulus (Zy)	3,843.92 cm³	234.571 in³
Radius of gyration (rx)	19.1 cm	7.521 in
Radius of gyration (ry)	11.63 cm	4.578 in