Dimensions, weight per metre and paint area
W18x55 is a wide-flange shape weighing 81.8 kg/m (55.0 lb/ft): a 12 m length weighs 981.6 kg. It is 459.7 mm deep and 191.3 mm wide; the web is 9.91 mm and the flanges 16 mm thick.
Also listed as W460X82.
| Depth h | 459.7 mm |
|---|---|
| Flange width b | 191.3 mm |
| Web thickness tw | 9.91 mm |
| Flange thickness tf | 16 mm |
| Weight per metre | 81.8 kg/m |
|---|---|
| Weight per foot | 55.0 lb/ft |
| Cross-section area | 104.2 cm² |
| Paint area per metre | 1.685 m²/m |
| Paint area per tonne | 20.6 m²/t |
| 1 m | 81.8 kg |
|---|---|
| 6 m | 490.8 kg |
| 12 m | 981.6 kg |
Dimensions and mass per AISC Shapes Database v16.0, 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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