Dimensions, weight per metre and paint area
HEM 340 is a heavy H-section (HE M) weighing 248 kg/m: a 12 m length weighs 2,976.0 kg. It is 377 mm deep and 309 mm wide; the web is 21 mm and the flanges 40 mm thick.
| Depth h | 377 mm |
|---|---|
| Flange width b | 309 mm |
| Web thickness tw | 21 mm |
| Flange thickness tf | 40 mm |
| Weight per metre | 248 kg/m |
|---|---|
| Cross-section area | 315.9 cm² |
| Paint area per metre | 1.990 m²/m |
| Paint area per tonne | 8.1 m²/t |
| 1 m | 248 kg |
|---|---|
| 6 m | 1,488.0 kg |
| 12 m | 2,976.0 kg |
Dimensions and mass per EN 10365, from Steel Optimizer's verified section library. Area is worked out from the mass at 7,850 kg/m³. Paint area counts the outside perimeter with square corners and ignores root radii, so it is on the safe side: typically 2–5 % above catalogue surface areas.
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