I 700x300x8x18 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 700x300x8x18 (México) · Doble T I 700x300x8x18 (Argentina / LATAM) · UB 700 (UK / Australia)

The I 700x300x8x18 steel profile weighs 126.5 kg/m (84.98 lb/ft), has a depth of 700 mm (27.56 in), flange width 300 mm (11.81 in). Cross-sectional area: 16,112 mm². Moment of inertia Ix = 145,129.636 cm⁴, Iy = 8,102.833 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	700 mm	27.56 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	18 mm	0.71 in
Weight	126.5 kg/m	84.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,112 mm²	24.974 in²
Moment of inertia (Ix)	145,129.64 cm⁴	3486.74 in⁴
Moment of inertia (Iy)	8,102.83 cm⁴	194.67 in⁴
Elastic section modulus (Sx)	4,146.56 cm³	253.040 in³
Elastic section modulus (Sy)	540.19 cm³	32.964 in³
Plastic section modulus (Zx)	4,564.59 cm³	278.550 in³
Plastic section modulus (Zy)	820.62 cm³	50.078 in³
Radius of gyration (rx)	30.01 cm	11.816 in
Radius of gyration (ry)	7.09 cm	2.792 in