Dimensions, weight per metre and paint area
HN 300x150 is a narrow-flange H-section (HN series) weighing 36.7 kg/m: a 12 m length weighs 440.4 kg. It is 300 mm deep and 150 mm wide; the web is 6.5 mm and the flanges 9 mm thick.
| Depth h | 300 mm |
|---|---|
| Flange width b | 150 mm |
| Web thickness tw | 6.5 mm |
| Flange thickness tf | 9 mm |
| Weight per metre | 36.7 kg/m |
|---|---|
| Cross-section area | 46.8 cm² |
| Paint area per metre | 1.200 m²/m |
| Paint area per tonne | 32.7 m²/t |
| 1 m | 36.7 kg |
|---|---|
| 6 m | 220.2 kg |
| 12 m | 440.4 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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