I 350x300x6x20 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 350x300x6x20 (México) · Doble T I 350x300x6x20 (Argentina / LATAM) · UB 350 (UK / Australia)

The I 350x300x6x20 steel profile weighs 108.8 kg/m (73.11 lb/ft), has a depth of 350 mm (13.78 in), flange width 300 mm (11.81 in). Cross-sectional area: 13,860 mm². Moment of inertia Ix = 34,199.55 cm⁴, Iy = 9,000.558 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	350 mm	13.78 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	20 mm	0.79 in
Weight	108.8 kg/m	73.11 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,860 mm²	21.483 in²
Moment of inertia (Ix)	34,199.55 cm⁴	821.64 in⁴
Moment of inertia (Iy)	9,000.56 cm⁴	216.24 in⁴
Elastic section modulus (Sx)	1,954.26 cm³	119.257 in³
Elastic section modulus (Sy)	600.04 cm³	36.617 in³
Plastic section modulus (Zx)	2,124.15 cm³	129.624 in³
Plastic section modulus (Zy)	902.79 cm³	55.092 in³
Radius of gyration (rx)	15.71 cm	6.184 in
Radius of gyration (ry)	8.06 cm	3.173 in