C12x25

Dimensions, weight per metre and paint area

C12x25 is an American Standard channel weighing 37.2 kg/m (25.0 lb/ft): a 12 m length weighs 446.4 kg. It is 304.8 mm deep and 77.5 mm wide; the web is 9.83 mm and the flanges 12.73 mm thick.

Also listed as C310X37.

Dimensions

Depth h	304.8 mm
Flange width b	77.5 mm
Web thickness tw	9.83 mm
Flange thickness tf	12.73 mm

Weight and area

Weight per metre	37.2 kg/m
Weight per foot	25.0 lb/ft
Cross-section area	47.4 cm²
Paint area per metre	0.920 m²/m
Paint area per tonne	24.8 m²/t

Weight by length

1 m	37.2 kg
6 m	223.2 kg
12 m	446.4 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.