HEAA Wide Flange

HEAA 280 (EN 10365)

Source: ArcelorMittal Sales Programme V2026-1. Verified fields: A, G, It, Iw, Iy, Iz, Wply, Wplz, Wy, Wz, b, h, iy, iz, r, tf, tw. Other fields remain unverified unless identified as calculated. Radii of gyration are derived as i = √(I/A) from the cited source inertia and area.

h = 264 mm · b = 280 mm · tw = 7 mm · tf = 10 mm · G = 61.2 kg/m

EN 10365 I/H section
Cross-Section Profile — HEAA 280 (to scale)

All dimensions in mm · I/H section · G = 61.2 kg/m · EN 10365

61.2
kg / m
78
A (cm²)
10550
Iy (cm⁴)
799.8
Wy (cm³)

Reference values — verify against the current edition of the applicable standard or manufacturer's table before design use.

Section Properties

Overall depth h 264 mm
Width b 280 mm
Web thickness tw 7 mm
Flange thickness tf 10 mm
Root radius r 24 mm
Area A 78 cm²
Mass per length G 61.2 kg/m
Second moment (y-y) Iy 10550 cm⁴
Elastic modulus (y-y) Wy 799.8 cm³
Plastic modulus (y-y) Wpl,y 873 cm³
Radius (y-y) = √(Iy/A) iy 11.63 cm
Second moment (z-z) Iz 3664 cm⁴
Elastic modulus (z-z) Wz 261.7 cm³
Plastic modulus (z-z) Wpl,z 399.3 cm³
Radius (z-z) = √(Iz/A) iz 6.85378 cm
Torsion constant It 35.49 cm⁴
Warping constant Iw 590100 cm⁶

Using this section record

Read the axis labels before using inertia or modulus: the major and minor axes are not interchangeable. Dimensions are in millimetres; area is in cm², second moments in cm⁴, moduli in cm³ and radii in cm. Convert powers of length consistently when transferring values to a calculation.

A Source line covers only its listed verified fields. Other fields remain subject to verification. A dash is unavailable, never zero. Withheld values must not be inferred from the remaining dimensions. Nominal mass and dimensions are reference values rather than measured tolerances or procurement guarantees. Confirm the exact product, manufacturing route, grade and thickness with the manufacturer. Section properties alone do not establish member resistance: stability, effective length, connections and project design requirements need separate assessment.