I 1251x300x12.7x25.4 IMCA · Weight & Dimensions

IMCA, 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 1251x300x12.7x25.4 (México) · Doble T I 1251x300x12.7x25.4 (Argentina / LATAM) · UB 1251 (UK / Australia)

The I 1251x300x12.7x25.4 steel profile weighs 239.3 kg/m (160.79 lb/ft), has a depth of 1251 mm (49.25 in), flange width 300 mm (11.81 in). Cross-sectional area: 30,482.54 mm². Moment of inertia Ix = 755,351.723 cm⁴, Iy = 11,450.487 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	1251 mm	49.25 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	12.7 mm	0.50 in
Flange thickness (tf)	25.4 mm	1.00 in
Weight	239.3 kg/m	160.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	30,482.54 mm²	47.248 in²
Moment of inertia (Ix)	755,351.72 cm⁴	18147.33 in⁴
Moment of inertia (Iy)	11,450.49 cm⁴	275.10 in⁴
Elastic section modulus (Sx)	12,075.97 cm³	736.924 in³
Elastic section modulus (Sy)	763.37 cm³	46.584 in³
Plastic section modulus (Zx)	13,912.6 cm³	849.002 in³
Plastic section modulus (Zy)	1,191.4 cm³	72.704 in³
Radius of gyration (rx)	49.78 cm	19.598 in
Radius of gyration (ry)	6.13 cm	2.413 in