Steel channels can be categorized based on its dimensions. Light channel steels are small sized sections, up to 50 mm. Medium parallel flange channel are medium sized and usually between 50-200 mm .Heavy sections which are larger sections, bigger than 200 mm.
American standard steel channel prove to be dynamic elements in design and construction, which is structural steel material created with a specific cross section. They have close dimensional tolerance. Channel sections are also classified based on shapes into steel channels etc. ASTM Steel Channel Section Properties various sizes ranging C3 - C15.The most widely used steel grade for channel steel is ASTM A36,which is machinable. formable and weldable. Parallel flanges channels can also be galvanized to increases its corrosion-resistance.
American sections surface condition:
According to ASTM A 6/A 6M - 07
Dimensions:
ASTM A 6/A 6M - 07
Flange slope:
Approx. 162/3 %
ASTM Structural Steel Channel are as follows in imperial units
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| Designation | Dimensions | Static Parameters | |||||||
| Moment of Inertia | Section Modulus | ||||||||
| Imperial (in x lb/ft) |
Depth h (in |
Width w (in) |
Web Thickness (in) |
Sectional Area (in2) |
Weight (lb/ft) |
Ix (in4 |
Iy (in4) |
Wx (in3) |
Wy (in3) |
| C 15 x 50 | 15 | 3.716 | 0.716 | 14.7 | 50 | 404 | 11.0 | 53.8 | 3.78 |
| C 15 x 40 | 15 | 3.520 | 0.520 | 11.8 | 40 | 349 | 9.23 | 46.5 | 3.37 |
| C 15 x 33.9 | 15 | 3.400 | 0.400 | 9.96 | 33.9 | 315 | 8.13 | 42.0 | 3.11 |
| C 12 x 30 | 12 | 3.170 | 0.510 | 8.82 | 30 | 162 | 5.14 | 27.0 | 2.06 |
| C 12 x 25 | 12 | 3.047 | 0.387 | 7.35 | 25 | 144 | 4.47 | 24.1 | 1.88 |
| C 12 x 20.7 | 12 | 2.942 | 0.282 | 6.09 | 20.7 | 129 | 3.88 | 21.5 | 1.73 |
| C 10 x 30 | 10 | 3.033 | 0.673 | 8.82 | 30 | 103 | 3.94 | 20.7 | 1.65 |
| C 10 x 25 | 10 | 2.886 | 0.526 | 7.35 | 25 | 91.2 | 3.36 | 18.2 | 1.48 |
| C 10 x 20 | 10 | 2.739 | 0.379 | 5.88 | 20 | 78.9 | 2.81 | 15.8 | 1.32 |
| C 10 x 15.3 | 10 | 2.600 | 0.240 | 4.49 | 15.3 | 67.4 | 2.28 | 13.5 | 1.16 |
| C 9 x 20 | 9 | 2.648 | 0.448 | 5.88 | 20 | 60.9 | 2.42 | 13.5 | 1.17 |
| C 9 x 15 | 9 | 2.485 | 0.285 | 4.41 | 15 | 51.0 | 1.93 | 11.3 | 1.01 |
| C 9 x 13.4 | 9 | 2.433 | 0.233 | 3.94 | 13.4 | 47.9 | 1.76 | 10.6 | 0.96 |
| C 8 x 18.75 | 8 | 2.527 | 0.487 | 5.51 | 18.75 | 44.0 | 1.98 | 11.0 | 1.01 |
| C 8 x 13.75 | 8 | 2.343 | 0.303 | 4.04 | 13.75 | 36.1 | 1.53 | 9.03 | 0.85 |
| C 8 x 11.5 | 8 | 2.260 | 0.220 | 3.38 | 11.5 | 32.6 | 1.32 | 8.14 | 0.78 |
| C 7 x 14.75 | 7 | 2.299 | 0.419 | 4.33 | 14.75 | 27.2 | 1.38 | 7.78 | 0.78 |
| C 7 x 12.25 | 7 | 2.194 | 0.314 | 3.60 | 12.25 | 24.2 | 1.17 | 6.93 | 0.70 |
| C 7 x 9.8 | 7 | 2.090 | 0.210 | 2.87 | 9.8 | 21.3 | 0.97 | 6.08 | 0.63 |
| C 6 x 13 | 6 | 2.157 | 0.437 | 3.83 | 13 | 17.4 | 1.05 | 5.80 | 0.64 |
| C 6 x 10.5 | 6 | 2.034 | 0.314 | 3.09 | 10.5 | 15.2 | 0.87 | 5.06 | 0.56 |
| C 6 x 8.2 | 6 | 1.920 | 0.200 | 2.40 | 8.2 | 13.1 | 0.69 | 4.38 | 0.49 |
| C 5 x 9 | 5 | 1.885 | 0.325 | 2.64 | 9 | 8.90 | 0.63 | 3.56 | 0.45 |
| C 5 x 6.7 | 5 | 1.750 | 0.190 | 1.97 | 6.7 | 7.49 | 0.48 | 3.00 | 0.38 |
| C 4 x 7.25 | 4 | 1.721 | 0.321 | 2.13 | 7.25 | 4.59 | 0.43 | 2.29 | 0.34 |
| C 4 x 5.4 | 4 | 1.584 | 0.184 | 1.59 | 5.4 | 3.85 | 0.32 | 1.93 | 0.28 |
| C 3 x 6 | 3 | 1.596 | 0.356 | 1.76 | 6 | 2.07 | 0.31 | 1.38 | 0.27 |
| C 3 x 5 | 3 | 1.498 | 0.258 | 1.47 | 5 | 1.85 | 0.25 | 1.24 | 0.23 |
| C 3 x 4.1 | 3 | 1.410 | 0.170 | 1.21 | 4.1 | 1.66 | 0.20 | 1.10 | 0.20 |
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