HD 400 x 990 is one of the HD sections of the European library (wide flange columns): 550 mm deep and 448 mm wide, web 71.9 mm, flanges 115 mm, 990 kg/m, area 1,262 cm².
| Dimension | Value | Description |
|---|---|---|
| h | 550 mm | Overall depth |
| b | 448 mm | Overall width (flange width, or leg length) |
| tw | 71.9 mm | Web thickness |
| tf | 115 mm | Flange thickness |
| r1 | 15 mm | Root radius (fillet between flange and web), or external corner radius for hollow sections |
| hi | 320 mm | Internal depth between flanges |
| d | 290 mm | Depth of the straight portion of the web between fillets |
| ss | 319.5 mm | Stiff bearing length |
| G | 990 kg/m | Mass per metre |
| A | 1,262 cm² | Cross-sectional area |
| AL | 2.722 m²/m | Painting surface per metre |
| AG | 2.747 m²/t | Painting surface per tonne |
Section properties
The structural properties of HD 400 x 990 are available in the Steel Profiles app with the European library:
- Iy, Wel,y, Wpl,y, iy
- Avz shear area
- Iz, Wel,z, Wpl,z, iz
- IT and Iw
- Maximum bolt size and flange gauges
- EN 1993-1-1 class for S235, S355 and S460
The app also runs design checks to EN 1993-1-1 on HD 400 x 990, finds the closest sections in the AISC, British, Canadian and Australian standards and compares it side by side with any other section.
Full properties in Steel Profiles
The free app shows HD 400 x 990 with its dimensions and drawing on iPhone, iPad and Mac. The European library unlocks the complete structural properties, the design checks to Eurocode 3, the Equivalent Finder across standards and the comparison of up to three sections. Favorites, weight lists and saved sections sync through iCloud.