Dimensions, weight per metre and paint area
HN 250x125 is a narrow-flange H-section (HN series) weighing 29 kg/m: a 12 m length weighs 348.0 kg. It is 250 mm deep and 125 mm wide; the web is 6 mm and the flanges 9 mm thick.
| Depth h | 250 mm |
|---|---|
| Flange width b | 125 mm |
| Web thickness tw | 6 mm |
| Flange thickness tf | 9 mm |
| Weight per metre | 29 kg/m |
|---|---|
| Cross-section area | 36.9 cm² |
| Paint area per metre | 1.000 m²/m |
| Paint area per tonne | 34.5 m²/t |
| 1 m | 29 kg |
|---|---|
| 6 m | 174.0 kg |
| 12 m | 348.0 kg |
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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