I 300x300x8x16 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 300x300x8x16 (México) · Doble T I 300x300x8x16 (Argentina / LATAM) · UB 300 (UK / Australia)

The I 300x300x8x16 steel profile weighs 92.2 kg/m (61.93 lb/ft), has a depth of 300 mm (11.81 in), flange width 300 mm (11.81 in). Cross-sectional area: 11,744 mm². Moment of inertia Ix = 20,661.175 cm⁴, Iy = 7,201.143 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	16 mm	0.63 in
Weight	92.2 kg/m	61.93 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	11,744 mm²	18.203 in²
Moment of inertia (Ix)	20,661.18 cm⁴	496.38 in⁴
Moment of inertia (Iy)	7,201.14 cm⁴	173.01 in⁴
Elastic section modulus (Sx)	1,377.41 cm³	84.055 in³
Elastic section modulus (Sy)	480.08 cm³	29.296 in³
Plastic section modulus (Zx)	1,506.85 cm³	91.954 in³
Plastic section modulus (Zy)	724.29 cm³	44.199 in³
Radius of gyration (rx)	13.26 cm	5.222 in
Radius of gyration (ry)	7.83 cm	3.083 in