I 300x250x6x18 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 300x250x6x18 (México) · Doble T I 300x250x6x18 (Argentina / LATAM) · UB 300 (UK / Australia)

The I 300x250x6x18 steel profile weighs 83.0 kg/m (55.81 lb/ft), has a depth of 300 mm (11.81 in), flange width 250 mm (9.84 in). Cross-sectional area: 10,584 mm². Moment of inertia Ix = 18,837.187 cm⁴, Iy = 4,687.975 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	250 mm	9.84 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	18 mm	0.71 in
Weight	83.0 kg/m	55.81 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,584 mm²	16.405 in²
Moment of inertia (Ix)	18,837.19 cm⁴	452.56 in⁴
Moment of inertia (Iy)	4,687.98 cm⁴	112.63 in⁴
Elastic section modulus (Sx)	1,255.81 cm³	76.635 in³
Elastic section modulus (Sy)	375.04 cm³	22.886 in³
Plastic section modulus (Zx)	1,373.54 cm³	83.819 in³
Plastic section modulus (Zy)	564.88 cm³	34.471 in³
Radius of gyration (rx)	13.34 cm	5.252 in
Radius of gyration (ry)	6.66 cm	2.620 in