I 350x350x18x35 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 350x350x18x35 (México) · Doble T I 350x350x18x35 (Argentina / LATAM) · UB 350 (UK / Australia)

The I 350x350x18x35 steel profile weighs 231.9 kg/m (155.83 lb/ft), has a depth of 350 mm (13.78 in), flange width 350 mm (13.78 in). Cross-sectional area: 29,540 mm². Moment of inertia Ix = 64,318.217 cm⁴, Iy = 25,024.025 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	350 mm	13.78 in
Width (b)	350 mm	13.78 in
Web thickness (tw)	18 mm	0.71 in
Flange thickness (tf)	35 mm	1.38 in
Weight	231.9 kg/m	155.83 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	29,540 mm²	45.787 in²
Moment of inertia (Ix)	64,318.22 cm⁴	1545.25 in⁴
Moment of inertia (Iy)	25,024.02 cm⁴	601.20 in⁴
Elastic section modulus (Sx)	3,675.33 cm³	224.283 in³
Elastic section modulus (Sy)	1,429.94 cm³	87.261 in³
Plastic section modulus (Zx)	4,211.55 cm³	257.006 in³
Plastic section modulus (Zy)	2,166.43 cm³	132.204 in³
Radius of gyration (rx)	14.76 cm	5.809 in
Radius of gyration (ry)	9.2 cm	3.624 in