I 300x150x4x8 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 300x150x4x8 (México) · Doble T I 300x150x4x8 (Argentina / LATAM) · UB 300 (UK / Australia)

The I 300x150x4x8 steel profile weighs 27.8 kg/m (18.67 lb/ft), has a depth of 300 mm (11.81 in), flange width 150 mm (5.91 in). Cross-sectional area: 3,536 mm². Moment of inertia Ix = 5,880.663 cm⁴, Iy = 450.151 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	150 mm	5.91 in
Web thickness (tw)	4 mm	0.16 in
Flange thickness (tf)	8 mm	0.31 in
Weight	27.8 kg/m	18.67 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,536 mm²	5.481 in²
Moment of inertia (Ix)	5,880.66 cm⁴	141.28 in⁴
Moment of inertia (Iy)	450.15 cm⁴	10.81 in⁴
Elastic section modulus (Sx)	392.04 cm³	23.924 in³
Elastic section modulus (Sy)	60.02 cm³	3.663 in³
Plastic section modulus (Zx)	431.06 cm³	26.305 in³
Plastic section modulus (Zy)	91.14 cm³	5.561 in³
Radius of gyration (rx)	12.9 cm	5.077 in
Radius of gyration (ry)	3.57 cm	1.405 in