I 300x100x4x5 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 300x100x4x5 (México) · Doble T I 300x100x4x5 (Argentina / LATAM) · UB 300 (UK / Australia)

The I 300x100x4x5 steel profile weighs 17.0 kg/m (11.40 lb/ft), has a depth of 300 mm (11.81 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,160 mm². Moment of inertia Ix = 2,988.8 cm⁴, Iy = 83.488 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	100 mm	3.94 in
Web thickness (tw)	4 mm	0.16 in
Flange thickness (tf)	5 mm	0.20 in
Weight	17.0 kg/m	11.40 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,160 mm²	3.348 in²
Moment of inertia (Ix)	2,988.8 cm⁴	71.81 in⁴
Moment of inertia (Iy)	83.49 cm⁴	2.01 in⁴
Elastic section modulus (Sx)	199.25 cm³	12.159 in³
Elastic section modulus (Sy)	16.7 cm³	1.019 in³
Plastic section modulus (Zx)	231.6 cm³	14.133 in³
Plastic section modulus (Zy)	26.16 cm³	1.596 in³
Radius of gyration (rx)	11.76 cm	4.631 in
Radius of gyration (ry)	1.97 cm	0.774 in