Dimensions, weight per metre and paint area
W8x31 is a wide-flange shape weighing 46.1 kg/m (31.0 lb/ft): a 12 m length weighs 553.2 kg. It is 203.2 mm deep and 203.2 mm wide; the web is 7.24 mm and the flanges 11.05 mm thick.
Also listed as W200X46.1.
| Depth h | 203.2 mm |
|---|---|
| Flange width b | 203.2 mm |
| Web thickness tw | 7.24 mm |
| Flange thickness tf | 11.05 mm |
| Weight per metre | 46.1 kg/m |
|---|---|
| Weight per foot | 31.0 lb/ft |
| Cross-section area | 58.7 cm² |
| Paint area per metre | 1.220 m²/m |
| Paint area per tonne | 26.5 m²/t |
| 1 m | 46.1 kg |
|---|---|
| 6 m | 276.6 kg |
| 12 m | 553.2 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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