I 1851x450x12.7x25.4 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 1851x450x12.7x25.4 (México) · Doble T I 1851x450x12.7x25.4 (Argentina / LATAM) · UB 1851 (UK / Australia)

The I 1851x450x12.7x25.4 steel profile weighs 358.9 kg/m (241.18 lb/ft), has a depth of 1851 mm (72.87 in), flange width 450 mm (17.72 in). Cross-sectional area: 45,722.54 mm². Moment of inertia Ix = 2,522,252.644 cm⁴, Iy = 38,606.979 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	1851 mm	72.87 in
Width (b)	450 mm	17.72 in
Web thickness (tw)	12.7 mm	0.50 in
Flange thickness (tf)	25.4 mm	1.00 in
Weight	358.9 kg/m	241.18 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	45,722.54 mm²	70.870 in²
Moment of inertia (Ix)	2,522,252.64 cm⁴	60597.12 in⁴
Moment of inertia (Iy)	38,606.98 cm⁴	927.53 in⁴
Elastic section modulus (Sx)	27,252.86 cm³	1663.079 in³
Elastic section modulus (Sy)	1,715.87 cm³	104.709 in³
Plastic section modulus (Zx)	31,155.89 cm³	1901.257 in³
Plastic section modulus (Zy)	2,644.34 cm³	161.368 in³
Radius of gyration (rx)	74.27 cm	29.241 in
Radius of gyration (ry)	9.19 cm	3.618 in