Dimensions, weight per metre and paint area
HW 428x407 is a wide-flange H-section (HW series) weighing 283 kg/m: a 12 m length weighs 3,396.0 kg. It is 428 mm deep and 407 mm wide; the web is 20 mm and the flanges 35 mm thick.
| Depth h | 428 mm |
|---|---|
| Flange width b | 407 mm |
| Web thickness tw | 20 mm |
| Flange thickness tf | 35 mm |
| Weight per metre | 283 kg/m |
|---|---|
| Cross-section area | 360.5 cm² |
| Paint area per metre | 2.484 m²/m |
| Paint area per tonne | 8.8 m²/t |
| 1 m | 283 kg |
|---|---|
| 6 m | 1,698.0 kg |
| 12 m | 3,396.0 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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