I 300x150x6x18 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 300x150x6x18 (México) · Doble T I 300x150x6x18 (Argentina / LATAM) · UB 300 (UK / Australia)

The I 300x150x6x18 steel profile weighs 54.8 kg/m (36.82 lb/ft), has a depth of 300 mm (11.81 in), flange width 150 mm (5.91 in). Cross-sectional area: 6,984 mm². Moment of inertia Ix = 11,670.307 cm⁴, Iy = 1,012.975 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)	6 mm	0.24 in
Flange thickness (tf)	18 mm	0.71 in
Weight	54.8 kg/m	36.82 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,984 mm²	10.825 in²
Moment of inertia (Ix)	11,670.31 cm⁴	280.38 in⁴
Moment of inertia (Iy)	1,012.98 cm⁴	24.34 in⁴
Elastic section modulus (Sx)	778.02 cm³	47.478 in³
Elastic section modulus (Sy)	135.06 cm³	8.242 in³
Plastic section modulus (Zx)	865.94 cm³	52.843 in³
Plastic section modulus (Zy)	204.88 cm³	12.502 in³
Radius of gyration (rx)	12.93 cm	5.089 in
Radius of gyration (ry)	3.81 cm	1.499 in