I 500x350x8x18 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 500x350x8x18 (México) · Doble T I 500x350x8x18 (Argentina / LATAM) · UB 500 (UK / Australia)

The I 500x350x8x18 steel profile weighs 128.0 kg/m (86.04 lb/ft), has a depth of 500 mm (19.69 in), flange width 350 mm (13.78 in). Cross-sectional area: 16,312 mm². Moment of inertia Ix = 79,875.903 cm⁴, Iy = 12,864.48 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	500 mm	19.69 in
Width (b)	350 mm	13.78 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	18 mm	0.71 in
Weight	128.0 kg/m	86.04 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,312 mm²	25.284 in²
Moment of inertia (Ix)	79,875.9 cm⁴	1919.02 in⁴
Moment of inertia (Iy)	12,864.48 cm⁴	309.07 in⁴
Elastic section modulus (Sx)	3,195.04 cm³	194.974 in³
Elastic section modulus (Sy)	735.11 cm³	44.860 in³
Plastic section modulus (Zx)	3,467.19 cm³	211.582 in³
Plastic section modulus (Zy)	1,109.92 cm³	67.732 in³
Radius of gyration (rx)	22.13 cm	8.712 in
Radius of gyration (ry)	8.88 cm	3.496 in